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Finding the Third Proportional to 290,790 and 437,641

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Solution

The third proportional to 290,790 and 437,641 is: 658,652.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,790 : 437,641 = 437,641 : x
  2. Step 2: Convert to fraction form
    290,790/437,641 = 437,641/x
  3. Step 3: Cross multiply
    290,790x = 437,641 × 437,641
  4. Step 4: Simplify right side
    290,790x = 191,529,644,881
  5. Step 5: Solve for x
    x = 191,529,644,881/290,790
  6. Step 6: Final answer
    x = 658,652.79

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.