Finding the Fourth Proportional to 718,042.87, 990,905.19 and 395,753.79
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Solution
The fourth proportional to 718,042.87, 990,905.19 and 395,753.79 is: 546,143.55
Step by Step Solution
- Step 1: Write the proportion equation
718,042.87 : 990,905.19 = 395,753.79 : x - Step 2: Convert to fraction form
718,042.87/990,905.19 = 395,753.79/x - Step 3: Cross multiply
718,042.87x = 990,905.19 × 395,753.79 - Step 4: Simplify right side
718,042.87x = 392,154,484,473.17 - Step 5: Solve for x
x = 392,154,484,473.17/718,042.87 - Step 6: Final answer
x = 546,143.55
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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.