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Finding the Third Proportional to 262,646 and 407,469

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Solution

The third proportional to 262,646 and 407,469 is: 632,147.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,646 : 407,469 = 407,469 : x
  2. Step 2: Convert to fraction form
    262,646/407,469 = 407,469/x
  3. Step 3: Cross multiply
    262,646x = 407,469 × 407,469
  4. Step 4: Simplify right side
    262,646x = 166,030,985,961
  5. Step 5: Solve for x
    x = 166,030,985,961/262,646
  6. Step 6: Final answer
    x = 632,147.40

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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.