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Finding the Third Proportional to 412,873.50 and 638,097

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Solution

The third proportional to 412,873.50 and 638,097 is: 986,180.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,873.50 : 638,097 = 638,097 : x
  2. Step 2: Convert to fraction form
    412,873.50/638,097 = 638,097/x
  3. Step 3: Cross multiply
    412,873.50x = 638,097 × 638,097
  4. Step 4: Simplify right side
    412,873.50x = 407,167,781,409
  5. Step 5: Solve for x
    x = 407,167,781,409/412,873.50
  6. Step 6: Final answer
    x = 986,180.47

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.