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Finding the Fourth Proportional to 442,999.60, 664,499.40 and 440,375.20

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Solution

The fourth proportional to 442,999.60, 664,499.40 and 440,375.20 is: 660,562.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,999.60 : 664,499.40 = 440,375.20 : x
  2. Step 2: Convert to fraction form
    442,999.60/664,499.40 = 440,375.20/x
  3. Step 3: Cross multiply
    442,999.60x = 664,499.40 × 440,375.20
  4. Step 4: Simplify right side
    442,999.60x = 292,629,056,174.88
  5. Step 5: Solve for x
    x = 292,629,056,174.88/442,999.60
  6. Step 6: Final answer
    x = 660,562.80

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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.