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Finding the Third Proportional to 685,603.50 and 1,489,143

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Solution

The third proportional to 685,603.50 and 1,489,143 is: 3,234,445.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,603.50 : 1,489,143 = 1,489,143 : x
  2. Step 2: Convert to fraction form
    685,603.50/1,489,143 = 1,489,143/x
  3. Step 3: Cross multiply
    685,603.50x = 1,489,143 × 1,489,143
  4. Step 4: Simplify right side
    685,603.50x = 2,217,546,874,449
  5. Step 5: Solve for x
    x = 2,217,546,874,449/685,603.50
  6. Step 6: Final answer
    x = 3,234,445.09

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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.