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Finding the Third Proportional to 262,721 and 407,636

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Solution

The third proportional to 262,721 and 407,636 is: 632,485.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,721 : 407,636 = 407,636 : x
  2. Step 2: Convert to fraction form
    262,721/407,636 = 407,636/x
  3. Step 3: Cross multiply
    262,721x = 407,636 × 407,636
  4. Step 4: Simplify right side
    262,721x = 166,167,108,496
  5. Step 5: Solve for x
    x = 166,167,108,496/262,721
  6. Step 6: Final answer
    x = 632,485.06

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.