Home / 690,755.31-1,036,723.43-270,326.43

Finding the Fourth Proportional to 690,755.31, 1,036,723.43 and 270,326.43

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Solution

The fourth proportional to 690,755.31, 1,036,723.43 and 270,326.43 is: 405,720.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,755.31 : 1,036,723.43 = 270,326.43 : x
  2. Step 2: Convert to fraction form
    690,755.31/1,036,723.43 = 270,326.43/x
  3. Step 3: Cross multiply
    690,755.31x = 1,036,723.43 × 270,326.43
  4. Step 4: Simplify right side
    690,755.31x = 280,253,743,729.26
  5. Step 5: Solve for x
    x = 280,253,743,729.26/690,755.31
  6. Step 6: Final answer
    x = 405,720.72

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1.5x scale

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.