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Finding the Fourth Proportional to 629,853.30, 944,998.65 and 275,121.90

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Solution

The fourth proportional to 629,853.30, 944,998.65 and 275,121.90 is: 412,778.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,853.30 : 944,998.65 = 275,121.90 : x
  2. Step 2: Convert to fraction form
    629,853.30/944,998.65 = 275,121.90/x
  3. Step 3: Cross multiply
    629,853.30x = 944,998.65 × 275,121.90
  4. Step 4: Simplify right side
    629,853.30x = 259,989,824,085.44
  5. Step 5: Solve for x
    x = 259,989,824,085.44/629,853.30
  6. Step 6: Final answer
    x = 412,778.38

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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.