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Finding the Fourth Proportional to 641,496.38, 885,251.30 and 351,107.87

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Solution

The fourth proportional to 641,496.38, 885,251.30 and 351,107.87 is: 484,521.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,496.38 : 885,251.30 = 351,107.87 : x
  2. Step 2: Convert to fraction form
    641,496.38/885,251.30 = 351,107.87/x
  3. Step 3: Cross multiply
    641,496.38x = 885,251.30 × 351,107.87
  4. Step 4: Simplify right side
    641,496.38x = 310,818,692,175.94
  5. Step 5: Solve for x
    x = 310,818,692,175.94/641,496.38
  6. Step 6: Final answer
    x = 484,521.35

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1.5x scale

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.