The problem provides two pie charts showing the passenger traffic (in millions of passenger-kilometers) and cargo traffic (in millions of ton-kilometers) for different airlines (S, P, R, and Q). The problem asks to estimate the total number of passengers transported by airline S, given that the average transport distance per passenger is 500 km.

1. Problem Description

The problem provides two pie charts showing the passenger traffic (in millions of passenger-kilometers) and cargo traffic (in millions of ton-kilometers) for different airlines (S, P, R, and Q). The problem asks to estimate the total number of passengers transported by airline S, given that the average transport distance per passenger is 500 km.

2. Solution Steps

First, we need to identify the passenger traffic volume of airline S from the pie chart. It is given as 18,747 million passenger-kilometers. This value represents the total distance traveled by all passengers of airline S. To find the number of passengers, we divide the total distance by the average distance per passenger.

The total passenger-kilometers for airline S is $18,747 \times 10^6$ passenger-kilometers.

The average distance traveled by each passenger is 500 km.

Therefore, the number of passengers is given by:

$\text{Number of passengers} = \frac{\text{Total passenger-kilometers}}{\text{Average distance per passenger}}$

$\text{Number of passengers} = \frac{18,747 \times 10^6 \text{ km}}{500 \text{ km/passenger}}$

$\text{Number of passengers} = 37,494,000 \text{ passengers} = 37.494 \times 10^6$ passengers

$37.494 \times 10^6$ passengers is 37.494 million passengers. Now we need to find the closest answer among the given choices.

The options are:

3. 4万人 (3.4 ten thousand people = 34,000 people)

4. 41万人 (341 ten thousand people = 3,410,000 people)

5. 12万人 (612 ten thousand people = 6,120,000 people)

6. 408万人 (3,408 ten thousand people = 34,080,000 people)

7. 124万人 (6,124 ten thousand people = 61,240,000 people)

The calculated number of passengers for airline S is 37,494,000 or 34.08 million. The closest value to the calculated value is 34,080,000, which is 3,408 ten thousand people.

3. Final Answer

3,408万人