Home / 516,217.11-712,356.45-286,790.46

Finding the Fourth Proportional to 516,217.11, 712,356.45 and 286,790.46

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Solution

The fourth proportional to 516,217.11, 712,356.45 and 286,790.46 is: 395,757.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,217.11 : 712,356.45 = 286,790.46 : x
  2. Step 2: Convert to fraction form
    516,217.11/712,356.45 = 286,790.46/x
  3. Step 3: Cross multiply
    516,217.11x = 712,356.45 × 286,790.46
  4. Step 4: Simplify right side
    516,217.11x = 204,297,033,979.47
  5. Step 5: Solve for x
    x = 204,297,033,979.47/516,217.11
  6. Step 6: Final answer
    x = 395,757.97

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Double scale
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Similar ratio
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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.