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Finding the Third Proportional to 621,608 and 1,373,908

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Solution

The third proportional to 621,608 and 1,373,908 is: 3,036,677.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,608 : 1,373,908 = 1,373,908 : x
  2. Step 2: Convert to fraction form
    621,608/1,373,908 = 1,373,908/x
  3. Step 3: Cross multiply
    621,608x = 1,373,908 × 1,373,908
  4. Step 4: Simplify right side
    621,608x = 1,887,623,192,464
  5. Step 5: Solve for x
    x = 1,887,623,192,464/621,608
  6. Step 6: Final answer
    x = 3,036,677.77

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.