Home / 861,539.20-1,188,911.36-479,565.44

Finding the Fourth Proportional to 861,539.20, 1,188,911.36 and 479,565.44

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Solution

The fourth proportional to 861,539.20, 1,188,911.36 and 479,565.44 is: 661,793.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,539.20 : 1,188,911.36 = 479,565.44 : x
  2. Step 2: Convert to fraction form
    861,539.20/1,188,911.36 = 479,565.44/x
  3. Step 3: Cross multiply
    861,539.20x = 1,188,911.36 × 479,565.44
  4. Step 4: Simplify right side
    861,539.20x = 570,160,799,479.40
  5. Step 5: Solve for x
    x = 570,160,799,479.40/861,539.20
  6. Step 6: Final answer
    x = 661,793.22

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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.