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Finding the Third Proportional to 305,412 and 670,644

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Solution

The third proportional to 305,412 and 670,644 is: 1,472,644.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,412 : 670,644 = 670,644 : x
  2. Step 2: Convert to fraction form
    305,412/670,644 = 670,644/x
  3. Step 3: Cross multiply
    305,412x = 670,644 × 670,644
  4. Step 4: Simplify right side
    305,412x = 449,763,374,736
  5. Step 5: Solve for x
    x = 449,763,374,736/305,412
  6. Step 6: Final answer
    x = 1,472,644.74

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.