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Finding the Third Proportional to 685,424 and 1,485,247

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Solution

The third proportional to 685,424 and 1,485,247 is: 3,218,385.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,424 : 1,485,247 = 1,485,247 : x
  2. Step 2: Convert to fraction form
    685,424/1,485,247 = 1,485,247/x
  3. Step 3: Cross multiply
    685,424x = 1,485,247 × 1,485,247
  4. Step 4: Simplify right side
    685,424x = 2,205,958,651,009
  5. Step 5: Solve for x
    x = 2,205,958,651,009/685,424
  6. Step 6: Final answer
    x = 3,218,385.48

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.