Home / 812,281.25-1,218,608.73-272,609.15

Finding the Fourth Proportional to 812,281.25, 1,218,608.73 and 272,609.15

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Solution

The fourth proportional to 812,281.25, 1,218,608.73 and 272,609.15 is: 408,976.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,281.25 : 1,218,608.73 = 272,609.15 : x
  2. Step 2: Convert to fraction form
    812,281.25/1,218,608.73 = 272,609.15/x
  3. Step 3: Cross multiply
    812,281.25x = 1,218,608.73 × 272,609.15
  4. Step 4: Simplify right side
    812,281.25x = 332,203,890,067.88
  5. Step 5: Solve for x
    x = 332,203,890,067.88/812,281.25
  6. Step 6: Final answer
    x = 408,976.44

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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.