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Finding the Fourth Proportional to 625,254.30, 862,374.92 and 538,187.58

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Solution

The fourth proportional to 625,254.30, 862,374.92 and 538,187.58 is: 742,289.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,254.30 : 862,374.92 = 538,187.58 : x
  2. Step 2: Convert to fraction form
    625,254.30/862,374.92 = 538,187.58/x
  3. Step 3: Cross multiply
    625,254.30x = 862,374.92 × 538,187.58
  4. Step 4: Simplify right side
    625,254.30x = 464,119,468,556.56
  5. Step 5: Solve for x
    x = 464,119,468,556.56/625,254.30
  6. Step 6: Final answer
    x = 742,289.13

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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.