Home / 861,472.28-1,188,831.80-479,490.86

Finding the Fourth Proportional to 861,472.28, 1,188,831.80 and 479,490.86

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Solution

The fourth proportional to 861,472.28, 1,188,831.80 and 479,490.86 is: 661,697.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,472.28 : 1,188,831.80 = 479,490.86 : x
  2. Step 2: Convert to fraction form
    861,472.28/1,188,831.80 = 479,490.86/x
  3. Step 3: Cross multiply
    861,472.28x = 1,188,831.80 × 479,490.86
  4. Step 4: Simplify right side
    861,472.28x = 570,033,982,177.35
  5. Step 5: Solve for x
    x = 570,033,982,177.35/861,472.28
  6. Step 6: Final answer
    x = 661,697.42

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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.