Home / 718,865.55-992,037.81-396,575.56

Finding the Fourth Proportional to 718,865.55, 992,037.81 and 396,575.56

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Solution

The fourth proportional to 718,865.55, 992,037.81 and 396,575.56 is: 547,276.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,865.55 : 992,037.81 = 396,575.56 : x
  2. Step 2: Convert to fraction form
    718,865.55/992,037.81 = 396,575.56/x
  3. Step 3: Cross multiply
    718,865.55x = 992,037.81 × 396,575.56
  4. Step 4: Simplify right side
    718,865.55x = 393,417,952,769.13
  5. Step 5: Solve for x
    x = 393,417,952,769.13/718,865.55
  6. Step 6: Final answer
    x = 547,276.13

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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.