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Finding the Third Proportional to 308,076 and 661,992

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Solution

The third proportional to 308,076 and 661,992 is: 1,422,484.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,076 : 661,992 = 661,992 : x
  2. Step 2: Convert to fraction form
    308,076/661,992 = 661,992/x
  3. Step 3: Cross multiply
    308,076x = 661,992 × 661,992
  4. Step 4: Simplify right side
    308,076x = 438,233,408,064
  5. Step 5: Solve for x
    x = 438,233,408,064/308,076
  6. Step 6: Final answer
    x = 1,422,484.74

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.