Home / 812,757.35-1,219,187.97-272,991.78

Finding the Fourth Proportional to 812,757.35, 1,219,187.97 and 272,991.78

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Solution

The fourth proportional to 812,757.35, 1,219,187.97 and 272,991.78 is: 409,505.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,757.35 : 1,219,187.97 = 272,991.78 : x
  2. Step 2: Convert to fraction form
    812,757.35/1,219,187.97 = 272,991.78/x
  3. Step 3: Cross multiply
    812,757.35x = 1,219,187.97 × 272,991.78
  4. Step 4: Simplify right side
    812,757.35x = 332,828,294,084.89
  5. Step 5: Solve for x
    x = 332,828,294,084.89/812,757.35
  6. Step 6: Final answer
    x = 409,505.12

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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.