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Finding the Fourth Proportional to 625,654.90, 863,408.19 and 339,179.50

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Solution

The fourth proportional to 625,654.90, 863,408.19 and 339,179.50 is: 468,070.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,654.90 : 863,408.19 = 339,179.50 : x
  2. Step 2: Convert to fraction form
    625,654.90/863,408.19 = 339,179.50/x
  3. Step 3: Cross multiply
    625,654.90x = 863,408.19 × 339,179.50
  4. Step 4: Simplify right side
    625,654.90x = 292,850,358,180.11
  5. Step 5: Solve for x
    x = 292,850,358,180.11/625,654.90
  6. Step 6: Final answer
    x = 468,070.11

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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.