Finding the Fourth Proportional to 518,696,863.09, 715,799,531.08 and 280,542,313.46
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Solution
The fourth proportional to 518,696,863.09, 715,799,531.08 and 280,542,313.46 is: 387,147,235.15
Step by Step Solution
- Step 1: Write the proportion equation
518,696,863.09 : 715,799,531.08 = 280,542,313.46 : x - Step 2: Convert to fraction form
518,696,863.09/715,799,531.08 = 280,542,313.46/x - Step 3: Cross multiply
518,696,863.09x = 715,799,531.08 × 280,542,313.46 - Step 4: Simplify right side
518,696,863.09x = 200,812,056,423,854,496 - Step 5: Solve for x
x = 200,812,056,423,854,496/518,696,863.09 - Step 6: Final answer
x = 387,147,235.15
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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.