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Finding the Fourth Proportional to 655,921.80, 983,882.70 and 356,545.80

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Solution

The fourth proportional to 655,921.80, 983,882.70 and 356,545.80 is: 534,818.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,921.80 : 983,882.70 = 356,545.80 : x
  2. Step 2: Convert to fraction form
    655,921.80/983,882.70 = 356,545.80/x
  3. Step 3: Cross multiply
    655,921.80x = 983,882.70 × 356,545.80
  4. Step 4: Simplify right side
    655,921.80x = 350,799,244,377.66
  5. Step 5: Solve for x
    x = 350,799,244,377.66/655,921.80
  6. Step 6: Final answer
    x = 534,818.70

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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.