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Finding the Fourth Proportional to 629,740.60, 944,610.90 and 405,791.80

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Solution

The fourth proportional to 629,740.60, 944,610.90 and 405,791.80 is: 608,687.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,740.60 : 944,610.90 = 405,791.80 : x
  2. Step 2: Convert to fraction form
    629,740.60/944,610.90 = 405,791.80/x
  3. Step 3: Cross multiply
    629,740.60x = 944,610.90 × 405,791.80
  4. Step 4: Simplify right side
    629,740.60x = 383,315,357,410.62
  5. Step 5: Solve for x
    x = 383,315,357,410.62/629,740.60
  6. Step 6: Final answer
    x = 608,687.70

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Similar ratio
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1.5x scale

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.