Finding the Fourth Proportional to 715,869.76, 987,902.24 and 393,612.80
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Solution
The fourth proportional to 715,869.76, 987,902.24 and 393,612.80 is: 543,186.75
Step by Step Solution
- Step 1: Write the proportion equation
715,869.76 : 987,902.24 = 393,612.80 : x - Step 2: Convert to fraction form
715,869.76/987,902.24 = 393,612.80/x - Step 3: Cross multiply
715,869.76x = 987,902.24 × 393,612.80 - Step 4: Simplify right side
715,869.76x = 388,850,966,812.67 - Step 5: Solve for x
x = 388,850,966,812.67/715,869.76 - Step 6: Final answer
x = 543,186.75
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.