Home / 819,724.87-1,131,218.13-457,149.16

Finding the Fourth Proportional to 819,724.87, 1,131,218.13 and 457,149.16

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Solution

The fourth proportional to 819,724.87, 1,131,218.13 and 457,149.16 is: 630,864.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,724.87 : 1,131,218.13 = 457,149.16 : x
  2. Step 2: Convert to fraction form
    819,724.87/1,131,218.13 = 457,149.16/x
  3. Step 3: Cross multiply
    819,724.87x = 1,131,218.13 × 457,149.16
  4. Step 4: Simplify right side
    819,724.87x = 517,135,417,906.27
  5. Step 5: Solve for x
    x = 517,135,417,906.27/819,724.87
  6. Step 6: Final answer
    x = 630,864.62

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Double scale
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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.