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Finding the Fourth Proportional to 664,469.40, 996,704.10 and 440,083.20

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Solution

The fourth proportional to 664,469.40, 996,704.10 and 440,083.20 is: 660,124.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,469.40 : 996,704.10 = 440,083.20 : x
  2. Step 2: Convert to fraction form
    664,469.40/996,704.10 = 440,083.20/x
  3. Step 3: Cross multiply
    664,469.40x = 996,704.10 × 440,083.20
  4. Step 4: Simplify right side
    664,469.40x = 438,632,729,781.12
  5. Step 5: Solve for x
    x = 438,632,729,781.12/664,469.40
  6. Step 6: Final answer
    x = 660,124.80

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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.