Home / 719,007.68-992,251.37-396,738.54

Finding the Fourth Proportional to 719,007.68, 992,251.37 and 396,738.54

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Solution

The fourth proportional to 719,007.68, 992,251.37 and 396,738.54 is: 547,510.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,007.68 : 992,251.37 = 396,738.54 : x
  2. Step 2: Convert to fraction form
    719,007.68/992,251.37 = 396,738.54/x
  3. Step 3: Cross multiply
    719,007.68x = 992,251.37 × 396,738.54
  4. Step 4: Simplify right side
    719,007.68x = 393,664,359,846.80
  5. Step 5: Solve for x
    x = 393,664,359,846.80/719,007.68
  6. Step 6: Final answer
    x = 547,510.65

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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.