Home / 812,549.52-1,218,077.76-279,943.92

Finding the Fourth Proportional to 812,549.52, 1,218,077.76 and 279,943.92

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Solution

The fourth proportional to 812,549.52, 1,218,077.76 and 279,943.92 is: 419,658.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,549.52 : 1,218,077.76 = 279,943.92 : x
  2. Step 2: Convert to fraction form
    812,549.52/1,218,077.76 = 279,943.92/x
  3. Step 3: Cross multiply
    812,549.52x = 1,218,077.76 × 279,943.92
  4. Step 4: Simplify right side
    812,549.52x = 340,993,462,999.22
  5. Step 5: Solve for x
    x = 340,993,462,999.22/812,549.52
  6. Step 6: Final answer
    x = 419,658.68

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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.