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Finding the Third Proportional to 419,520 and 629,160

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Solution

The third proportional to 419,520 and 629,160 is: 943,560.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,520 : 629,160 = 629,160 : x
  2. Step 2: Convert to fraction form
    419,520/629,160 = 629,160/x
  3. Step 3: Cross multiply
    419,520x = 629,160 × 629,160
  4. Step 4: Simplify right side
    419,520x = 395,842,305,600
  5. Step 5: Solve for x
    x = 395,842,305,600/419,520
  6. Step 6: Final answer
    x = 943,560.03

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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.