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Finding the Third Proportional to 422,938 and 622,725

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Solution

The third proportional to 422,938 and 622,725 is: 916,887.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,938 : 622,725 = 622,725 : x
  2. Step 2: Convert to fraction form
    422,938/622,725 = 622,725/x
  3. Step 3: Cross multiply
    422,938x = 622,725 × 622,725
  4. Step 4: Simplify right side
    422,938x = 387,786,425,625
  5. Step 5: Solve for x
    x = 387,786,425,625/422,938
  6. Step 6: Final answer
    x = 916,887.17

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.