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Finding the Third Proportional to 415,326 and 631,197

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Solution

The third proportional to 415,326 and 631,197 is: 959,269.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,326 : 631,197 = 631,197 : x
  2. Step 2: Convert to fraction form
    415,326/631,197 = 631,197/x
  3. Step 3: Cross multiply
    415,326x = 631,197 × 631,197
  4. Step 4: Simplify right side
    415,326x = 398,409,652,809
  5. Step 5: Solve for x
    x = 398,409,652,809/415,326
  6. Step 6: Final answer
    x = 959,269.71

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.