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Finding the Fourth Proportional to 819,843.80, 1,229,765.70 and 648,601.70

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Solution

The fourth proportional to 819,843.80, 1,229,765.70 and 648,601.70 is: 972,902.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,843.80 : 1,229,765.70 = 648,601.70 : x
  2. Step 2: Convert to fraction form
    819,843.80/1,229,765.70 = 648,601.70/x
  3. Step 3: Cross multiply
    819,843.80x = 1,229,765.70 × 648,601.70
  4. Step 4: Simplify right side
    819,843.80x = 797,628,123,621.69
  5. Step 5: Solve for x
    x = 797,628,123,621.69/819,843.80
  6. Step 6: Final answer
    x = 972,902.55

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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.