Home / 8,221,419.10-12,332,128.65-3,969,891.10

Finding the Fourth Proportional to 8,221,419.10, 12,332,128.65 and 3,969,891.10

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Solution

The fourth proportional to 8,221,419.10, 12,332,128.65 and 3,969,891.10 is: 5,954,836.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,221,419.10 : 12,332,128.65 = 3,969,891.10 : x
  2. Step 2: Convert to fraction form
    8,221,419.10/12,332,128.65 = 3,969,891.10/x
  3. Step 3: Cross multiply
    8,221,419.10x = 12,332,128.65 × 3,969,891.10
  4. Step 4: Simplify right side
    8,221,419.10x = 48,957,207,771,690.02
  5. Step 5: Solve for x
    x = 48,957,207,771,690.02/8,221,419.10
  6. Step 6: Final answer
    x = 5,954,836.65

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Double scale
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Similar ratio
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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.