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Finding the Fourth Proportional to 625,287.70, 862,897.80 and 338,807.71

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Solution

The fourth proportional to 625,287.70, 862,897.80 and 338,807.71 is: 467,555.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,287.70 : 862,897.80 = 338,807.71 : x
  2. Step 2: Convert to fraction form
    625,287.70/862,897.80 = 338,807.71/x
  3. Step 3: Cross multiply
    625,287.70x = 862,897.80 × 338,807.71
  4. Step 4: Simplify right side
    625,287.70x = 292,356,427,582.04
  5. Step 5: Solve for x
    x = 292,356,427,582.04/625,287.70
  6. Step 6: Final answer
    x = 467,555.06

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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.