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Finding the Third Proportional to 489,765.75 and 756,813

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Solution

The third proportional to 489,765.75 and 756,813 is: 1,169,469.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,765.75 : 756,813 = 756,813 : x
  2. Step 2: Convert to fraction form
    489,765.75/756,813 = 756,813/x
  3. Step 3: Cross multiply
    489,765.75x = 756,813 × 756,813
  4. Step 4: Simplify right side
    489,765.75x = 572,765,916,969
  5. Step 5: Solve for x
    x = 572,765,916,969/489,765.75
  6. Step 6: Final answer
    x = 1,169,469.11

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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.