Home / 644,193.28-965,912.46-431,203.78

Finding the Fourth Proportional to 644,193.28, 965,912.46 and 431,203.78

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Solution

The fourth proportional to 644,193.28, 965,912.46 and 431,203.78 is: 646,553.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,193.28 : 965,912.46 = 431,203.78 : x
  2. Step 2: Convert to fraction form
    644,193.28/965,912.46 = 431,203.78/x
  3. Step 3: Cross multiply
    644,193.28x = 965,912.46 × 431,203.78
  4. Step 4: Simplify right side
    644,193.28x = 416,505,103,901.10
  5. Step 5: Solve for x
    x = 416,505,103,901.10/644,193.28
  6. Step 6: Final answer
    x = 646,553.01

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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.