Home / 812,791.20-1,217,437.20-672,823.20

Finding the Fourth Proportional to 812,791.20, 1,217,437.20 and 672,823.20

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Solution

The fourth proportional to 812,791.20, 1,217,437.20 and 672,823.20 is: 1,007,786.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,791.20 : 1,217,437.20 = 672,823.20 : x
  2. Step 2: Convert to fraction form
    812,791.20/1,217,437.20 = 672,823.20/x
  3. Step 3: Cross multiply
    812,791.20x = 1,217,437.20 × 672,823.20
  4. Step 4: Simplify right side
    812,791.20x = 819,119,992,703.04
  5. Step 5: Solve for x
    x = 819,119,992,703.04/812,791.20
  6. Step 6: Final answer
    x = 1,007,786.49

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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.