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Finding the Third Proportional to 289,725.75 and 629,322.75

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Solution

The third proportional to 289,725.75 and 629,322.75 is: 1,366,972.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,725.75 : 629,322.75 = 629,322.75 : x
  2. Step 2: Convert to fraction form
    289,725.75/629,322.75 = 629,322.75/x
  3. Step 3: Cross multiply
    289,725.75x = 629,322.75 × 629,322.75
  4. Step 4: Simplify right side
    289,725.75x = 396,047,123,667.56
  5. Step 5: Solve for x
    x = 396,047,123,667.56/289,725.75
  6. Step 6: Final answer
    x = 1,366,972.47

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.