Finding the Fourth Proportional to 715,660.96, 987,592.08 and 393,371.68
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Solution
The fourth proportional to 715,660.96, 987,592.08 and 393,371.68 is: 542,841.90
Step by Step Solution
- Step 1: Write the proportion equation
715,660.96 : 987,592.08 = 393,371.68 : x - Step 2: Convert to fraction form
715,660.96/987,592.08 = 393,371.68/x - Step 3: Cross multiply
715,660.96x = 987,592.08 × 393,371.68 - Step 4: Simplify right side
715,660.96x = 388,490,755,664.29 - Step 5: Solve for x
x = 388,490,755,664.29/715,660.96 - Step 6: Final answer
x = 542,841.90
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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.