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Finding the Fourth Proportional to 625,354.38, 862,986.87 and 338,881.50

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Solution

The fourth proportional to 625,354.38, 862,986.87 and 338,881.50 is: 467,655.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,354.38 : 862,986.87 = 338,881.50 : x
  2. Step 2: Convert to fraction form
    625,354.38/862,986.87 = 338,881.50/x
  3. Step 3: Cross multiply
    625,354.38x = 862,986.87 × 338,881.50
  4. Step 4: Simplify right side
    625,354.38x = 292,450,284,985.91
  5. Step 5: Solve for x
    x = 292,450,284,985.91/625,354.38
  6. Step 6: Final answer
    x = 467,655.29

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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.