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Finding the Third Proportional to 619,143.75 and 855,516.75

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Solution

The third proportional to 619,143.75 and 855,516.75 is: 1,182,130.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,143.75 : 855,516.75 = 855,516.75 : x
  2. Step 2: Convert to fraction form
    619,143.75/855,516.75 = 855,516.75/x
  3. Step 3: Cross multiply
    619,143.75x = 855,516.75 × 855,516.75
  4. Step 4: Simplify right side
    619,143.75x = 731,908,909,530.56
  5. Step 5: Solve for x
    x = 731,908,909,530.56/619,143.75
  6. Step 6: Final answer
    x = 1,182,130.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.