Home / 718,834.68-991,991.86-396,545.56

Finding the Fourth Proportional to 718,834.68, 991,991.86 and 396,545.56

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Solution

The fourth proportional to 718,834.68, 991,991.86 and 396,545.56 is: 547,232.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,834.68 : 991,991.86 = 396,545.56 : x
  2. Step 2: Convert to fraction form
    718,834.68/991,991.86 = 396,545.56/x
  3. Step 3: Cross multiply
    718,834.68x = 991,991.86 × 396,545.56
  4. Step 4: Simplify right side
    718,834.68x = 393,369,967,639.14
  5. Step 5: Solve for x
    x = 393,369,967,639.14/718,834.68
  6. Step 6: Final answer
    x = 547,232.87

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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.