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Finding the Third Proportional to 309,492 and 656,232

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Solution

The third proportional to 309,492 and 656,232 is: 1,391,442.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,492 : 656,232 = 656,232 : x
  2. Step 2: Convert to fraction form
    309,492/656,232 = 656,232/x
  3. Step 3: Cross multiply
    309,492x = 656,232 × 656,232
  4. Step 4: Simplify right side
    309,492x = 430,640,437,824
  5. Step 5: Solve for x
    x = 430,640,437,824/309,492
  6. Step 6: Final answer
    x = 1,391,442.87

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.