Home / 393,974.10-591,034.05-127,743.30

Finding the Fourth Proportional to 393,974.10, 591,034.05 and 127,743.30

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Solution

The fourth proportional to 393,974.10, 591,034.05 and 127,743.30 is: 191,638.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,974.10 : 591,034.05 = 127,743.30 : x
  2. Step 2: Convert to fraction form
    393,974.10/591,034.05 = 127,743.30/x
  3. Step 3: Cross multiply
    393,974.10x = 591,034.05 × 127,743.30
  4. Step 4: Simplify right side
    393,974.10x = 75,500,639,959.37
  5. Step 5: Solve for x
    x = 75,500,639,959.37/393,974.10
  6. Step 6: Final answer
    x = 191,638.59

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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.