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Finding the Fourth Proportional to 819,791.80, 1,229,687.70 and 482,486.20

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Solution

The fourth proportional to 819,791.80, 1,229,687.70 and 482,486.20 is: 723,729.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,791.80 : 1,229,687.70 = 482,486.20 : x
  2. Step 2: Convert to fraction form
    819,791.80/1,229,687.70 = 482,486.20/x
  3. Step 3: Cross multiply
    819,791.80x = 1,229,687.70 × 482,486.20
  4. Step 4: Simplify right side
    819,791.80x = 593,307,345,559.74
  5. Step 5: Solve for x
    x = 593,307,345,559.74/819,791.80
  6. Step 6: Final answer
    x = 723,729.30

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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.