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Finding the Third Proportional to 305,758 and 648,518

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Solution

The third proportional to 305,758 and 648,518 is: 1,375,517.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,758 : 648,518 = 648,518 : x
  2. Step 2: Convert to fraction form
    305,758/648,518 = 648,518/x
  3. Step 3: Cross multiply
    305,758x = 648,518 × 648,518
  4. Step 4: Simplify right side
    305,758x = 420,575,596,324
  5. Step 5: Solve for x
    x = 420,575,596,324/305,758
  6. Step 6: Final answer
    x = 1,375,517.88

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.