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Finding the Third Proportional to 644,938 and 1,400,660

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Solution

The third proportional to 644,938 and 1,400,660 is: 3,041,917.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,938 : 1,400,660 = 1,400,660 : x
  2. Step 2: Convert to fraction form
    644,938/1,400,660 = 1,400,660/x
  3. Step 3: Cross multiply
    644,938x = 1,400,660 × 1,400,660
  4. Step 4: Simplify right side
    644,938x = 1,961,848,435,600
  5. Step 5: Solve for x
    x = 1,961,848,435,600/644,938
  6. Step 6: Final answer
    x = 3,041,917.88

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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.