Home / 812,514.90-1,218,025.95-279,909.30

Finding the Fourth Proportional to 812,514.90, 1,218,025.95 and 279,909.30

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Solution

The fourth proportional to 812,514.90, 1,218,025.95 and 279,909.30 is: 419,606.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,514.90 : 1,218,025.95 = 279,909.30 : x
  2. Step 2: Convert to fraction form
    812,514.90/1,218,025.95 = 279,909.30/x
  3. Step 3: Cross multiply
    812,514.90x = 1,218,025.95 × 279,909.30
  4. Step 4: Simplify right side
    812,514.90x = 340,936,791,046.34
  5. Step 5: Solve for x
    x = 340,936,791,046.34/812,514.90
  6. Step 6: Final answer
    x = 419,606.82

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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.