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Finding the Fourth Proportional to 819,489.80, 1,229,234.70 and 767,001.80

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Solution

The fourth proportional to 819,489.80, 1,229,234.70 and 767,001.80 is: 1,150,502.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,489.80 : 1,229,234.70 = 767,001.80 : x
  2. Step 2: Convert to fraction form
    819,489.80/1,229,234.70 = 767,001.80/x
  3. Step 3: Cross multiply
    819,489.80x = 1,229,234.70 × 767,001.80
  4. Step 4: Simplify right side
    819,489.80x = 942,825,227,522.46
  5. Step 5: Solve for x
    x = 942,825,227,522.46/819,489.80
  6. Step 6: Final answer
    x = 1,150,502.70

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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.