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Finding the Fourth Proportional to 624,565.28, 861,900.60 and 338,084.48

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Solution

The fourth proportional to 624,565.28, 861,900.60 and 338,084.48 is: 466,556.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,565.28 : 861,900.60 = 338,084.48 : x
  2. Step 2: Convert to fraction form
    624,565.28/861,900.60 = 338,084.48/x
  3. Step 3: Cross multiply
    624,565.28x = 861,900.60 × 338,084.48
  4. Step 4: Simplify right side
    624,565.28x = 291,395,216,162.69
  5. Step 5: Solve for x
    x = 291,395,216,162.69/624,565.28
  6. Step 6: Final answer
    x = 466,556.86

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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.