Home / 861,471.28-1,188,830.42-479,489.86

Finding the Fourth Proportional to 861,471.28, 1,188,830.42 and 479,489.86

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Solution

The fourth proportional to 861,471.28, 1,188,830.42 and 479,489.86 is: 661,696.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,471.28 : 1,188,830.42 = 479,489.86 : x
  2. Step 2: Convert to fraction form
    861,471.28/1,188,830.42 = 479,489.86/x
  3. Step 3: Cross multiply
    861,471.28x = 1,188,830.42 × 479,489.86
  4. Step 4: Simplify right side
    861,471.28x = 570,032,131,649.54
  5. Step 5: Solve for x
    x = 570,032,131,649.54/861,471.28
  6. Step 6: Final answer
    x = 661,696.04

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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.