Home / 812,188.60-1,218,085.98-338,877.88

Finding the Fourth Proportional to 812,188.60, 1,218,085.98 and 338,877.88

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Solution

The fourth proportional to 812,188.60, 1,218,085.98 and 338,877.88 is: 508,234.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,188.60 : 1,218,085.98 = 338,877.88 : x
  2. Step 2: Convert to fraction form
    812,188.60/1,218,085.98 = 338,877.88/x
  3. Step 3: Cross multiply
    812,188.60x = 1,218,085.98 × 338,877.88
  4. Step 4: Simplify right side
    812,188.60x = 412,782,394,560.12
  5. Step 5: Solve for x
    x = 412,782,394,560.12/812,188.60
  6. Step 6: Final answer
    x = 508,234.66

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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.