Home / 861,023.40-1,291,535.28-261,931.20

Finding the Fourth Proportional to 861,023.40, 1,291,535.28 and 261,931.20

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Solution

The fourth proportional to 861,023.40, 1,291,535.28 and 261,931.20 is: 392,896.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,023.40 : 1,291,535.28 = 261,931.20 : x
  2. Step 2: Convert to fraction form
    861,023.40/1,291,535.28 = 261,931.20/x
  3. Step 3: Cross multiply
    861,023.40x = 1,291,535.28 × 261,931.20
  4. Step 4: Simplify right side
    861,023.40x = 338,293,385,732.74
  5. Step 5: Solve for x
    x = 338,293,385,732.74/861,023.40
  6. Step 6: Final answer
    x = 392,896.85

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Similar ratio
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1.5x scale

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.