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Finding the Third Proportional to 391,548.75 and 855,005.50

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Solution

The third proportional to 391,548.75 and 855,005.50 is: 1,867,032.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,548.75 : 855,005.50 = 855,005.50 : x
  2. Step 2: Convert to fraction form
    391,548.75/855,005.50 = 855,005.50/x
  3. Step 3: Cross multiply
    391,548.75x = 855,005.50 × 855,005.50
  4. Step 4: Simplify right side
    391,548.75x = 731,034,405,030.25
  5. Step 5: Solve for x
    x = 731,034,405,030.25/391,548.75
  6. Step 6: Final answer
    x = 1,867,032.92

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.