Home / 724,255.17-1,086,382.68-386,271.87

Finding the Fourth Proportional to 724,255.17, 1,086,382.68 and 386,271.87

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Solution

The fourth proportional to 724,255.17, 1,086,382.68 and 386,271.87 is: 579,407.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,255.17 : 1,086,382.68 = 386,271.87 : x
  2. Step 2: Convert to fraction form
    724,255.17/1,086,382.68 = 386,271.87/x
  3. Step 3: Cross multiply
    724,255.17x = 1,086,382.68 × 386,271.87
  4. Step 4: Simplify right side
    724,255.17x = 419,639,069,339.21
  5. Step 5: Solve for x
    x = 419,639,069,339.21/724,255.17
  6. Step 6: Final answer
    x = 579,407.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.