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Finding the Third Proportional to 690,789 and 1,486,554

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Solution

The third proportional to 690,789 and 1,486,554 is: 3,199,012.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,789 : 1,486,554 = 1,486,554 : x
  2. Step 2: Convert to fraction form
    690,789/1,486,554 = 1,486,554/x
  3. Step 3: Cross multiply
    690,789x = 1,486,554 × 1,486,554
  4. Step 4: Simplify right side
    690,789x = 2,209,842,794,916
  5. Step 5: Solve for x
    x = 2,209,842,794,916/690,789
  6. Step 6: Final answer
    x = 3,199,012.72

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.