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Finding the Third Proportional to 425,644.50 and 638,527.50

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Solution

The third proportional to 425,644.50 and 638,527.50 is: 957,882.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,644.50 : 638,527.50 = 638,527.50 : x
  2. Step 2: Convert to fraction form
    425,644.50/638,527.50 = 638,527.50/x
  3. Step 3: Cross multiply
    425,644.50x = 638,527.50 × 638,527.50
  4. Step 4: Simplify right side
    425,644.50x = 407,717,368,256.25
  5. Step 5: Solve for x
    x = 407,717,368,256.25/425,644.50
  6. Step 6: Final answer
    x = 957,882.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.