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Finding the Third Proportional to 279,321 and 607,215

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Solution

The third proportional to 279,321 and 607,215 is: 1,320,022.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,321 : 607,215 = 607,215 : x
  2. Step 2: Convert to fraction form
    279,321/607,215 = 607,215/x
  3. Step 3: Cross multiply
    279,321x = 607,215 × 607,215
  4. Step 4: Simplify right side
    279,321x = 368,710,056,225
  5. Step 5: Solve for x
    x = 368,710,056,225/279,321
  6. Step 6: Final answer
    x = 1,320,022.68

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.