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Finding the Fourth Proportional to 667,706.32, 921,433.24 and 361,791.04

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Solution

The fourth proportional to 667,706.32, 921,433.24 and 361,791.04 is: 499,270.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,706.32 : 921,433.24 = 361,791.04 : x
  2. Step 2: Convert to fraction form
    667,706.32/921,433.24 = 361,791.04/x
  3. Step 3: Cross multiply
    667,706.32x = 921,433.24 × 361,791.04
  4. Step 4: Simplify right side
    667,706.32x = 333,366,290,190.17
  5. Step 5: Solve for x
    x = 333,366,290,190.17/667,706.32
  6. Step 6: Final answer
    x = 499,270.83

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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.