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Finding the Third Proportional to 689,929 and 1,508,108

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Solution

The third proportional to 689,929 and 1,508,108 is: 3,296,556.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,929 : 1,508,108 = 1,508,108 : x
  2. Step 2: Convert to fraction form
    689,929/1,508,108 = 1,508,108/x
  3. Step 3: Cross multiply
    689,929x = 1,508,108 × 1,508,108
  4. Step 4: Simplify right side
    689,929x = 2,274,389,739,664
  5. Step 5: Solve for x
    x = 2,274,389,739,664/689,929
  6. Step 6: Final answer
    x = 3,296,556.22

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.