Home / 861,899.92-1,189,397.50-469,423.96

Finding the Fourth Proportional to 861,899.92, 1,189,397.50 and 469,423.96

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Solution

The fourth proportional to 861,899.92, 1,189,397.50 and 469,423.96 is: 647,791.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,899.92 : 1,189,397.50 = 469,423.96 : x
  2. Step 2: Convert to fraction form
    861,899.92/1,189,397.50 = 469,423.96/x
  3. Step 3: Cross multiply
    861,899.92x = 1,189,397.50 × 469,423.96
  4. Step 4: Simplify right side
    861,899.92x = 558,331,684,464.10
  5. Step 5: Solve for x
    x = 558,331,684,464.10/861,899.92
  6. Step 6: Final answer
    x = 647,791.78

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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.