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Finding the Fourth Proportional to 661,629,027.20, 992,443,540.80 and 661,629,027.20

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Solution

The fourth proportional to 661,629,027.20, 992,443,540.80 and 661,629,027.20 is: 992,443,540.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,629,027.20 : 992,443,540.80 = 661,629,027.20 : x
  2. Step 2: Convert to fraction form
    661,629,027.20/992,443,540.80 = 661,629,027.20/x
  3. Step 3: Cross multiply
    661,629,027.20x = 992,443,540.80 × 661,629,027.20
  4. Step 4: Simplify right side
    661,629,027.20x = 656,629,454,450,427,520
  5. Step 5: Solve for x
    x = 656,629,454,450,427,520/661,629,027.20
  6. Step 6: Final answer
    x = 992,443,540.80

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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.