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Finding the Fourth Proportional to 861,674, 1,189,137.48 and 539,281.04

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Solution

The fourth proportional to 861,674, 1,189,137.48 and 539,281.04 is: 744,224.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,674 : 1,189,137.48 = 539,281.04 : x
  2. Step 2: Convert to fraction form
    861,674/1,189,137.48 = 539,281.04/x
  3. Step 3: Cross multiply
    861,674x = 1,189,137.48 × 539,281.04
  4. Step 4: Simplify right side
    861,674x = 641,279,296,917.38
  5. Step 5: Solve for x
    x = 641,279,296,917.38/861,674
  6. Step 6: Final answer
    x = 744,224.96

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Double scale
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Similar ratio
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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.