Home / 780,255.12-1,170,382.56-219,289.64

Finding the Fourth Proportional to 780,255.12, 1,170,382.56 and 219,289.64

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Solution

The fourth proportional to 780,255.12, 1,170,382.56 and 219,289.64 is: 328,934.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,255.12 : 1,170,382.56 = 219,289.64 : x
  2. Step 2: Convert to fraction form
    780,255.12/1,170,382.56 = 219,289.64/x
  3. Step 3: Cross multiply
    780,255.12x = 1,170,382.56 × 219,289.64
  4. Step 4: Simplify right side
    780,255.12x = 256,652,770,244.68
  5. Step 5: Solve for x
    x = 256,652,770,244.68/780,255.12
  6. Step 6: Final answer
    x = 328,934.43

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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.