Home / 861,519.62-1,189,265.06-613,321.80

Finding the Fourth Proportional to 861,519.62, 1,189,265.06 and 613,321.80

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Solution

The fourth proportional to 861,519.62, 1,189,265.06 and 613,321.80 is: 846,646.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,519.62 : 1,189,265.06 = 613,321.80 : x
  2. Step 2: Convert to fraction form
    861,519.62/1,189,265.06 = 613,321.80/x
  3. Step 3: Cross multiply
    861,519.62x = 1,189,265.06 × 613,321.80
  4. Step 4: Simplify right side
    861,519.62x = 729,402,182,049.91
  5. Step 5: Solve for x
    x = 729,402,182,049.91/861,519.62
  6. Step 6: Final answer
    x = 846,646.05

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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.