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Finding the Third Proportional to 327,455 and 489,160

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Solution

The third proportional to 327,455 and 489,160 is: 730,718.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,455 : 489,160 = 489,160 : x
  2. Step 2: Convert to fraction form
    327,455/489,160 = 489,160/x
  3. Step 3: Cross multiply
    327,455x = 489,160 × 489,160
  4. Step 4: Simplify right side
    327,455x = 239,277,505,600
  5. Step 5: Solve for x
    x = 239,277,505,600/327,455
  6. Step 6: Final answer
    x = 730,718.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.