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Finding the Fourth Proportional to 585,505.17, 807,685.45 and 356,132.61

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Solution

The fourth proportional to 585,505.17, 807,685.45 and 356,132.61 is: 491,273.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,505.17 : 807,685.45 = 356,132.61 : x
  2. Step 2: Convert to fraction form
    585,505.17/807,685.45 = 356,132.61/x
  3. Step 3: Cross multiply
    585,505.17x = 807,685.45 × 356,132.61
  4. Step 4: Simplify right side
    585,505.17x = 287,643,127,367.53
  5. Step 5: Solve for x
    x = 287,643,127,367.53/585,505.17
  6. Step 6: Final answer
    x = 491,273.42

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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.