Home / 577,320.92-861,753.78-509,145.56

Finding the Fourth Proportional to 577,320.92, 861,753.78 and 509,145.56

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Solution

The fourth proportional to 577,320.92, 861,753.78 and 509,145.56 is: 759,989.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,320.92 : 861,753.78 = 509,145.56 : x
  2. Step 2: Convert to fraction form
    577,320.92/861,753.78 = 509,145.56/x
  3. Step 3: Cross multiply
    577,320.92x = 861,753.78 × 509,145.56
  4. Step 4: Simplify right side
    577,320.92x = 438,758,110,900.22
  5. Step 5: Solve for x
    x = 438,758,110,900.22/577,320.92
  6. Step 6: Final answer
    x = 759,989.97

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.