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Finding the Third Proportional to 295,415 and 644,298

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Solution

The third proportional to 295,415 and 644,298 is: 1,405,209.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,415 : 644,298 = 644,298 : x
  2. Step 2: Convert to fraction form
    295,415/644,298 = 644,298/x
  3. Step 3: Cross multiply
    295,415x = 644,298 × 644,298
  4. Step 4: Simplify right side
    295,415x = 415,119,912,804
  5. Step 5: Solve for x
    x = 415,119,912,804/295,415
  6. Step 6: Final answer
    x = 1,405,209.33

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.