Home / 861,217.28-1,189,065.12-539,057.60

Finding the Fourth Proportional to 861,217.28, 1,189,065.12 and 539,057.60

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Solution

The fourth proportional to 861,217.28, 1,189,065.12 and 539,057.60 is: 744,265.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,217.28 : 1,189,065.12 = 539,057.60 : x
  2. Step 2: Convert to fraction form
    861,217.28/1,189,065.12 = 539,057.60/x
  3. Step 3: Cross multiply
    861,217.28x = 1,189,065.12 × 539,057.60
  4. Step 4: Simplify right side
    861,217.28x = 640,974,589,830.91
  5. Step 5: Solve for x
    x = 640,974,589,830.91/861,217.28
  6. Step 6: Final answer
    x = 744,265.83

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.