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Finding the Fourth Proportional to 624,614.88, 861,971.31 and 338,134.95

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Solution

The fourth proportional to 624,614.88, 861,971.31 and 338,134.95 is: 466,627.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,614.88 : 861,971.31 = 338,134.95 : x
  2. Step 2: Convert to fraction form
    624,614.88/861,971.31 = 338,134.95/x
  3. Step 3: Cross multiply
    624,614.88x = 861,971.31 × 338,134.95
  4. Step 4: Simplify right side
    624,614.88x = 291,462,625,808.29
  5. Step 5: Solve for x
    x = 291,462,625,808.29/624,614.88
  6. Step 6: Final answer
    x = 466,627.73

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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.