Home / 718,760.13-991,944.68-396,498.39

Finding the Fourth Proportional to 718,760.13, 991,944.68 and 396,498.39

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Solution

The fourth proportional to 718,760.13, 991,944.68 and 396,498.39 is: 547,198.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,760.13 : 991,944.68 = 396,498.39 : x
  2. Step 2: Convert to fraction form
    718,760.13/991,944.68 = 396,498.39/x
  3. Step 3: Cross multiply
    718,760.13x = 991,944.68 × 396,498.39
  4. Step 4: Simplify right side
    718,760.13x = 393,304,466,606.57
  5. Step 5: Solve for x
    x = 393,304,466,606.57/718,760.13
  6. Step 6: Final answer
    x = 547,198.50

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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.