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Finding the Third Proportional to 688,659.75 and 1,489,518

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Solution

The third proportional to 688,659.75 and 1,489,518 is: 3,221,712.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,659.75 : 1,489,518 = 1,489,518 : x
  2. Step 2: Convert to fraction form
    688,659.75/1,489,518 = 1,489,518/x
  3. Step 3: Cross multiply
    688,659.75x = 1,489,518 × 1,489,518
  4. Step 4: Simplify right side
    688,659.75x = 2,218,663,872,324
  5. Step 5: Solve for x
    x = 2,218,663,872,324/688,659.75
  6. Step 6: Final answer
    x = 3,221,712.71

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.