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Finding the Fourth Proportional to 641,735.28, 885,605.22 and 351,342

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Solution

The fourth proportional to 641,735.28, 885,605.22 and 351,342 is: 484,857.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,735.28 : 885,605.22 = 351,342 : x
  2. Step 2: Convert to fraction form
    641,735.28/885,605.22 = 351,342/x
  3. Step 3: Cross multiply
    641,735.28x = 885,605.22 × 351,342
  4. Step 4: Simplify right side
    641,735.28x = 311,150,309,205.24
  5. Step 5: Solve for x
    x = 311,150,309,205.24/641,735.28
  6. Step 6: Final answer
    x = 484,857.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.