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Finding the Third Proportional to 419,540 and 629,188

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Solution

The third proportional to 419,540 and 629,188 is: 943,599.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,540 : 629,188 = 629,188 : x
  2. Step 2: Convert to fraction form
    419,540/629,188 = 629,188/x
  3. Step 3: Cross multiply
    419,540x = 629,188 × 629,188
  4. Step 4: Simplify right side
    419,540x = 395,877,539,344
  5. Step 5: Solve for x
    x = 395,877,539,344/419,540
  6. Step 6: Final answer
    x = 943,599.04

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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.