Home / 820,767.40-1,231,266.30-259,743.40

Finding the Fourth Proportional to 820,767.40, 1,231,266.30 and 259,743.40

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Solution

The fourth proportional to 820,767.40, 1,231,266.30 and 259,743.40 is: 389,651.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,767.40 : 1,231,266.30 = 259,743.40 : x
  2. Step 2: Convert to fraction form
    820,767.40/1,231,266.30 = 259,743.40/x
  3. Step 3: Cross multiply
    820,767.40x = 1,231,266.30 × 259,743.40
  4. Step 4: Simplify right side
    820,767.40x = 319,813,295,067.42
  5. Step 5: Solve for x
    x = 319,813,295,067.42/820,767.40
  6. Step 6: Final answer
    x = 389,651.56

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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.