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Finding the Fourth Proportional to 425,086.57, 636,930.01 and 297,015.85

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Solution

The fourth proportional to 425,086.57, 636,930.01 and 297,015.85 is: 445,034.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,086.57 : 636,930.01 = 297,015.85 : x
  2. Step 2: Convert to fraction form
    425,086.57/636,930.01 = 297,015.85/x
  3. Step 3: Cross multiply
    425,086.57x = 636,930.01 × 297,015.85
  4. Step 4: Simplify right side
    425,086.57x = 189,178,308,310.66
  5. Step 5: Solve for x
    x = 189,178,308,310.66/425,086.57
  6. Step 6: Final answer
    x = 445,034.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.