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Finding the Third Proportional to 288,738 and 629,886

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Solution

The third proportional to 288,738 and 629,886 is: 1,374,105.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,738 : 629,886 = 629,886 : x
  2. Step 2: Convert to fraction form
    288,738/629,886 = 629,886/x
  3. Step 3: Cross multiply
    288,738x = 629,886 × 629,886
  4. Step 4: Simplify right side
    288,738x = 396,756,372,996
  5. Step 5: Solve for x
    x = 396,756,372,996/288,738
  6. Step 6: Final answer
    x = 1,374,105.15

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.