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Finding the Fourth Proportional to 667,577.43, 921,207.15 and 377,098.83

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Solution

The fourth proportional to 667,577.43, 921,207.15 and 377,098.83 is: 520,368.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,577.43 : 921,207.15 = 377,098.83 : x
  2. Step 2: Convert to fraction form
    667,577.43/921,207.15 = 377,098.83/x
  3. Step 3: Cross multiply
    667,577.43x = 921,207.15 × 377,098.83
  4. Step 4: Simplify right side
    667,577.43x = 347,386,138,452.64
  5. Step 5: Solve for x
    x = 347,386,138,452.64/667,577.43
  6. Step 6: Final answer
    x = 520,368.31

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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.