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Finding the Fourth Proportional to 625,429.87, 863,093.10 and 338,949.97

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Solution

The fourth proportional to 625,429.87, 863,093.10 and 338,949.97 is: 467,750.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,429.87 : 863,093.10 = 338,949.97 : x
  2. Step 2: Convert to fraction form
    625,429.87/863,093.10 = 338,949.97/x
  3. Step 3: Cross multiply
    625,429.87x = 863,093.10 × 338,949.97
  4. Step 4: Simplify right side
    625,429.87x = 292,545,380,352.21
  5. Step 5: Solve for x
    x = 292,545,380,352.21/625,429.87
  6. Step 6: Final answer
    x = 467,750.89

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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.