Home / 861,470.28-1,188,829.04-479,488.86

Finding the Fourth Proportional to 861,470.28, 1,188,829.04 and 479,488.86

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Solution

The fourth proportional to 861,470.28, 1,188,829.04 and 479,488.86 is: 661,694.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,470.28 : 1,188,829.04 = 479,488.86 : x
  2. Step 2: Convert to fraction form
    861,470.28/1,188,829.04 = 479,488.86/x
  3. Step 3: Cross multiply
    861,470.28x = 1,188,829.04 × 479,488.86
  4. Step 4: Simplify right side
    861,470.28x = 570,030,278,727.05
  5. Step 5: Solve for x
    x = 570,030,278,727.05/861,470.28
  6. Step 6: Final answer
    x = 661,694.65

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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.