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Finding the Third Proportional to 290,948 and 451,556

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Solution

The third proportional to 290,948 and 451,556 is: 700,822.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,948 : 451,556 = 451,556 : x
  2. Step 2: Convert to fraction form
    290,948/451,556 = 451,556/x
  3. Step 3: Cross multiply
    290,948x = 451,556 × 451,556
  4. Step 4: Simplify right side
    290,948x = 203,902,821,136
  5. Step 5: Solve for x
    x = 203,902,821,136/290,948
  6. Step 6: Final answer
    x = 700,822.21

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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.