Home / 861,998.60-1,291,248.30-487,584.20

Finding the Fourth Proportional to 861,998.60, 1,291,248.30 and 487,584.20

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Solution

The fourth proportional to 861,998.60, 1,291,248.30 and 487,584.20 is: 730,386.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,998.60 : 1,291,248.30 = 487,584.20 : x
  2. Step 2: Convert to fraction form
    861,998.60/1,291,248.30 = 487,584.20/x
  3. Step 3: Cross multiply
    861,998.60x = 1,291,248.30 × 487,584.20
  4. Step 4: Simplify right side
    861,998.60x = 629,592,269,356.86
  5. Step 5: Solve for x
    x = 629,592,269,356.86/861,998.60
  6. Step 6: Final answer
    x = 730,386.65

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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.