Finding the Fourth Proportional to 715,366.47, 987,229.98 and 393,088.14
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Solution
The fourth proportional to 715,366.47, 987,229.98 and 393,088.14 is: 542,474.96
Step by Step Solution
- Step 1: Write the proportion equation
715,366.47 : 987,229.98 = 393,088.14 : x - Step 2: Convert to fraction form
715,366.47/987,229.98 = 393,088.14/x - Step 3: Cross multiply
715,366.47x = 987,229.98 × 393,088.14 - Step 4: Simplify right side
715,366.47x = 388,068,396,590.44 - Step 5: Solve for x
x = 388,068,396,590.44/715,366.47 - Step 6: Final answer
x = 542,474.96
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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.