Home / 431,986.82-647,989.55-132,460.76

Finding the Fourth Proportional to 431,986.82, 647,989.55 and 132,460.76

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Solution

The fourth proportional to 431,986.82, 647,989.55 and 132,460.76 is: 198,694.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,986.82 : 647,989.55 = 132,460.76 : x
  2. Step 2: Convert to fraction form
    431,986.82/647,989.55 = 132,460.76/x
  3. Step 3: Cross multiply
    431,986.82x = 647,989.55 × 132,460.76
  4. Step 4: Simplify right side
    431,986.82x = 85,833,190,216.18
  5. Step 5: Solve for x
    x = 85,833,190,216.18/431,986.82
  6. Step 6: Final answer
    x = 198,694.00

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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.