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Finding the Third Proportional to 413,212 and 638,044

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Solution

The third proportional to 413,212 and 638,044 is: 985,208.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,212 : 638,044 = 638,044 : x
  2. Step 2: Convert to fraction form
    413,212/638,044 = 638,044/x
  3. Step 3: Cross multiply
    413,212x = 638,044 × 638,044
  4. Step 4: Simplify right side
    413,212x = 407,100,145,936
  5. Step 5: Solve for x
    x = 407,100,145,936/413,212
  6. Step 6: Final answer
    x = 985,208.91

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.