Home / 861,131.25-1,188,361.13-479,182.64

Finding the Fourth Proportional to 861,131.25, 1,188,361.13 and 479,182.64

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Solution

The fourth proportional to 861,131.25, 1,188,361.13 and 479,182.64 is: 661,272.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,131.25 : 1,188,361.13 = 479,182.64 : x
  2. Step 2: Convert to fraction form
    861,131.25/1,188,361.13 = 479,182.64/x
  3. Step 3: Cross multiply
    861,131.25x = 1,188,361.13 × 479,182.64
  4. Step 4: Simplify right side
    861,131.25x = 569,442,015,209.06
  5. Step 5: Solve for x
    x = 569,442,015,209.06/861,131.25
  6. Step 6: Final answer
    x = 661,272.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.