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Finding the Third Proportional to 320,496 and 498,225

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Solution

The third proportional to 320,496 and 498,225 is: 774,512.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,496 : 498,225 = 498,225 : x
  2. Step 2: Convert to fraction form
    320,496/498,225 = 498,225/x
  3. Step 3: Cross multiply
    320,496x = 498,225 × 498,225
  4. Step 4: Simplify right side
    320,496x = 248,228,150,625
  5. Step 5: Solve for x
    x = 248,228,150,625/320,496
  6. Step 6: Final answer
    x = 774,512.48

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.