Home / 981,256.20-1,471,884.30-768,679.80

Finding the Fourth Proportional to 981,256.20, 1,471,884.30 and 768,679.80

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Solution

The fourth proportional to 981,256.20, 1,471,884.30 and 768,679.80 is: 1,153,019.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,256.20 : 1,471,884.30 = 768,679.80 : x
  2. Step 2: Convert to fraction form
    981,256.20/1,471,884.30 = 768,679.80/x
  3. Step 3: Cross multiply
    981,256.20x = 1,471,884.30 × 768,679.80
  4. Step 4: Simplify right side
    981,256.20x = 1,131,407,729,347.14
  5. Step 5: Solve for x
    x = 1,131,407,729,347.14/981,256.20
  6. Step 6: Final answer
    x = 1,153,019.70

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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.