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Finding the Third Proportional to 312,718.50 and 609,885

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Solution

The third proportional to 312,718.50 and 609,885 is: 1,189,439.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,718.50 : 609,885 = 609,885 : x
  2. Step 2: Convert to fraction form
    312,718.50/609,885 = 609,885/x
  3. Step 3: Cross multiply
    312,718.50x = 609,885 × 609,885
  4. Step 4: Simplify right side
    312,718.50x = 371,959,713,225
  5. Step 5: Solve for x
    x = 371,959,713,225/312,718.50
  6. Step 6: Final answer
    x = 1,189,439.43

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.