Finding the Fourth Proportional to 518,696,916.62, 715,799,604.80 and 280,542,366.99
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Solution
The fourth proportional to 518,696,916.62, 715,799,604.80 and 280,542,366.99 is: 387,147,308.93
Step by Step Solution
- Step 1: Write the proportion equation
518,696,916.62 : 715,799,604.80 = 280,542,366.99 : x - Step 2: Convert to fraction form
518,696,916.62/715,799,604.80 = 280,542,366.99/x - Step 3: Cross multiply
518,696,916.62x = 715,799,604.80 × 280,542,366.99 - Step 4: Simplify right side
518,696,916.62x = 200,812,115,419,695,840 - Step 5: Solve for x
x = 200,812,115,419,695,840/518,696,916.62 - Step 6: Final answer
x = 387,147,308.93
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.