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Finding the Third Proportional to 179,406 and 422,910

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Solution

The third proportional to 179,406 and 422,910 is: 996,916.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,406 : 422,910 = 422,910 : x
  2. Step 2: Convert to fraction form
    179,406/422,910 = 422,910/x
  3. Step 3: Cross multiply
    179,406x = 422,910 × 422,910
  4. Step 4: Simplify right side
    179,406x = 178,852,868,100
  5. Step 5: Solve for x
    x = 178,852,868,100/179,406
  6. Step 6: Final answer
    x = 996,916.87

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.