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Finding the Third Proportional to 668,418.75 and 1,391,917.50

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Solution

The third proportional to 668,418.75 and 1,391,917.50 is: 2,898,533.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,418.75 : 1,391,917.50 = 1,391,917.50 : x
  2. Step 2: Convert to fraction form
    668,418.75/1,391,917.50 = 1,391,917.50/x
  3. Step 3: Cross multiply
    668,418.75x = 1,391,917.50 × 1,391,917.50
  4. Step 4: Simplify right side
    668,418.75x = 1,937,434,326,806.25
  5. Step 5: Solve for x
    x = 1,937,434,326,806.25/668,418.75
  6. Step 6: Final answer
    x = 2,898,533.78

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.