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Finding the Third Proportional to 642,906.50 and 1,374,382.50

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Solution

The third proportional to 642,906.50 and 1,374,382.50 is: 2,938,105.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,906.50 : 1,374,382.50 = 1,374,382.50 : x
  2. Step 2: Convert to fraction form
    642,906.50/1,374,382.50 = 1,374,382.50/x
  3. Step 3: Cross multiply
    642,906.50x = 1,374,382.50 × 1,374,382.50
  4. Step 4: Simplify right side
    642,906.50x = 1,888,927,256,306.25
  5. Step 5: Solve for x
    x = 1,888,927,256,306.25/642,906.50
  6. Step 6: Final answer
    x = 2,938,105.71

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.