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Finding the Third Proportional to 413,293 and 638,355

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Solution

The third proportional to 413,293 and 638,355 is: 985,976.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,293 : 638,355 = 638,355 : x
  2. Step 2: Convert to fraction form
    413,293/638,355 = 638,355/x
  3. Step 3: Cross multiply
    413,293x = 638,355 × 638,355
  4. Step 4: Simplify right side
    413,293x = 407,497,106,025
  5. Step 5: Solve for x
    x = 407,497,106,025/413,293
  6. Step 6: Final answer
    x = 985,976.31

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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.