Home / 861,184.28-1,188,418.56-479,207.72

Finding the Fourth Proportional to 861,184.28, 1,188,418.56 and 479,207.72

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Solution

The fourth proportional to 861,184.28, 1,188,418.56 and 479,207.72 is: 661,297.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,184.28 : 1,188,418.56 = 479,207.72 : x
  2. Step 2: Convert to fraction form
    861,184.28/1,188,418.56 = 479,207.72/x
  3. Step 3: Cross multiply
    861,184.28x = 1,188,418.56 × 479,207.72
  4. Step 4: Simplify right side
    861,184.28x = 569,499,348,543.28
  5. Step 5: Solve for x
    x = 569,499,348,543.28/861,184.28
  6. Step 6: Final answer
    x = 661,297.89

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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.