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Finding the Fourth Proportional to 667,227.89, 920,778.87 and 361,304.30

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Solution

The fourth proportional to 667,227.89, 920,778.87 and 361,304.30 is: 498,602.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,227.89 : 920,778.87 = 361,304.30 : x
  2. Step 2: Convert to fraction form
    667,227.89/920,778.87 = 361,304.30/x
  3. Step 3: Cross multiply
    667,227.89x = 920,778.87 × 361,304.30
  4. Step 4: Simplify right side
    667,227.89x = 332,681,362,138.57
  5. Step 5: Solve for x
    x = 332,681,362,138.57/667,227.89
  6. Step 6: Final answer
    x = 498,602.30

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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.