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Finding the Third Proportional to 423,067.50 and 655,395.75

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Solution

The third proportional to 423,067.50 and 655,395.75 is: 1,015,307.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,067.50 : 655,395.75 = 655,395.75 : x
  2. Step 2: Convert to fraction form
    423,067.50/655,395.75 = 655,395.75/x
  3. Step 3: Cross multiply
    423,067.50x = 655,395.75 × 655,395.75
  4. Step 4: Simplify right side
    423,067.50x = 429,543,589,118.06
  5. Step 5: Solve for x
    x = 429,543,589,118.06/423,067.50
  6. Step 6: Final answer
    x = 1,015,307.46

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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.