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Finding the Third Proportional to 1,399,989 and 2,991,885

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Solution

The third proportional to 1,399,989 and 2,991,885 is: 6,393,890.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,989 : 2,991,885 = 2,991,885 : x
  2. Step 2: Convert to fraction form
    1,399,989/2,991,885 = 2,991,885/x
  3. Step 3: Cross multiply
    1,399,989x = 2,991,885 × 2,991,885
  4. Step 4: Simplify right side
    1,399,989x = 8,951,375,853,225
  5. Step 5: Solve for x
    x = 8,951,375,853,225/1,399,989
  6. Step 6: Final answer
    x = 6,393,890.13

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.