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Finding the Third Proportional to 689,015 and 1,006,306

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Solution

The third proportional to 689,015 and 1,006,306 is: 1,469,709.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,015 : 1,006,306 = 1,006,306 : x
  2. Step 2: Convert to fraction form
    689,015/1,006,306 = 1,006,306/x
  3. Step 3: Cross multiply
    689,015x = 1,006,306 × 1,006,306
  4. Step 4: Simplify right side
    689,015x = 1,012,651,765,636
  5. Step 5: Solve for x
    x = 1,012,651,765,636/689,015
  6. Step 6: Final answer
    x = 1,469,709.32

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.