Home / 861,976.10-1,291,214.55-487,561.70

Finding the Fourth Proportional to 861,976.10, 1,291,214.55 and 487,561.70

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Solution

The fourth proportional to 861,976.10, 1,291,214.55 and 487,561.70 is: 730,352.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,976.10 : 1,291,214.55 = 487,561.70 : x
  2. Step 2: Convert to fraction form
    861,976.10/1,291,214.55 = 487,561.70/x
  3. Step 3: Cross multiply
    861,976.10x = 1,291,214.55 × 487,561.70
  4. Step 4: Simplify right side
    861,976.10x = 629,546,761,062.74
  5. Step 5: Solve for x
    x = 629,546,761,062.74/861,976.10
  6. Step 6: Final answer
    x = 730,352.92

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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.