Home / 8,389,189.74-12,522,540.36-7,198,761.90

Finding the Fourth Proportional to 8,389,189.74, 12,522,540.36 and 7,198,761.90

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Solution

The fourth proportional to 8,389,189.74, 12,522,540.36 and 7,198,761.90 is: 10,745,589.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,389,189.74 : 12,522,540.36 = 7,198,761.90 : x
  2. Step 2: Convert to fraction form
    8,389,189.74/12,522,540.36 = 7,198,761.90/x
  3. Step 3: Cross multiply
    8,389,189.74x = 12,522,540.36 × 7,198,761.90
  4. Step 4: Simplify right side
    8,389,189.74x = 90,146,786,434,780.28
  5. Step 5: Solve for x
    x = 90,146,786,434,780.28/8,389,189.74
  6. Step 6: Final answer
    x = 10,745,589.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.