Finding the Fourth Proportional to 721,943.97, 996,294.47 and 395,251.53
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Solution
The fourth proportional to 721,943.97, 996,294.47 and 395,251.53 is: 545,453.56
Step by Step Solution
- Step 1: Write the proportion equation
721,943.97 : 996,294.47 = 395,251.53 : x - Step 2: Convert to fraction form
721,943.97/996,294.47 = 395,251.53/x - Step 3: Cross multiply
721,943.97x = 996,294.47 × 395,251.53 - Step 4: Simplify right side
721,943.97x = 393,786,911,621.78 - Step 5: Solve for x
x = 393,786,911,621.78/721,943.97 - Step 6: Final answer
x = 545,453.56
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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.