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Finding the Third Proportional to 310,447.69 and 670,725.56

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Solution

The third proportional to 310,447.69 and 670,725.56 is: 1,449,109.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,447.69 : 670,725.56 = 670,725.56 : x
  2. Step 2: Convert to fraction form
    310,447.69/670,725.56 = 670,725.56/x
  3. Step 3: Cross multiply
    310,447.69x = 670,725.56 × 670,725.56
  4. Step 4: Simplify right side
    310,447.69x = 449,872,780,190.94
  5. Step 5: Solve for x
    x = 449,872,780,190.94/310,447.69
  6. Step 6: Final answer
    x = 1,449,109.78

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.