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Finding the Third Proportional to 422,554.50 and 655,314.75

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Solution

The third proportional to 422,554.50 and 655,314.75 is: 1,016,288.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,554.50 : 655,314.75 = 655,314.75 : x
  2. Step 2: Convert to fraction form
    422,554.50/655,314.75 = 655,314.75/x
  3. Step 3: Cross multiply
    422,554.50x = 655,314.75 × 655,314.75
  4. Step 4: Simplify right side
    422,554.50x = 429,437,421,567.56
  5. Step 5: Solve for x
    x = 429,437,421,567.56/422,554.50
  6. Step 6: Final answer
    x = 1,016,288.84

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.