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Finding the Third Proportional to 768,690 and 1,637,172

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Solution

The third proportional to 768,690 and 1,637,172 is: 3,486,883.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,690 : 1,637,172 = 1,637,172 : x
  2. Step 2: Convert to fraction form
    768,690/1,637,172 = 1,637,172/x
  3. Step 3: Cross multiply
    768,690x = 1,637,172 × 1,637,172
  4. Step 4: Simplify right side
    768,690x = 2,680,332,157,584
  5. Step 5: Solve for x
    x = 2,680,332,157,584/768,690
  6. Step 6: Final answer
    x = 3,486,883.08

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.