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Finding the Third Proportional to 668,777 and 1,490,722

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Solution

The third proportional to 668,777 and 1,490,722 is: 3,322,859.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,777 : 1,490,722 = 1,490,722 : x
  2. Step 2: Convert to fraction form
    668,777/1,490,722 = 1,490,722/x
  3. Step 3: Cross multiply
    668,777x = 1,490,722 × 1,490,722
  4. Step 4: Simplify right side
    668,777x = 2,222,252,081,284
  5. Step 5: Solve for x
    x = 2,222,252,081,284/668,777
  6. Step 6: Final answer
    x = 3,322,859.61

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Why These Related Problems?

These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.