Finding the Fourth Proportional to 419,904,983.20, 629,857,474.80 and 317,868,311.20
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Solution
The fourth proportional to 419,904,983.20, 629,857,474.80 and 317,868,311.20 is: 476,802,466.80
Step by Step Solution
- Step 1: Write the proportion equation
419,904,983.20 : 629,857,474.80 = 317,868,311.20 : x - Step 2: Convert to fraction form
419,904,983.20/629,857,474.80 = 317,868,311.20/x - Step 3: Cross multiply
419,904,983.20x = 629,857,474.80 × 317,868,311.20 - Step 4: Simplify right side
419,904,983.20x = 200,211,731,811,372,544 - Step 5: Solve for x
x = 200,211,731,811,372,544/419,904,983.20 - Step 6: Final answer
x = 476,802,466.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.