Home / 981,256.80-1,471,885.20-856,840.80

Finding the Fourth Proportional to 981,256.80, 1,471,885.20 and 856,840.80

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Solution

The fourth proportional to 981,256.80, 1,471,885.20 and 856,840.80 is: 1,285,261.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,256.80 : 1,471,885.20 = 856,840.80 : x
  2. Step 2: Convert to fraction form
    981,256.80/1,471,885.20 = 856,840.80/x
  3. Step 3: Cross multiply
    981,256.80x = 1,471,885.20 × 856,840.80
  4. Step 4: Simplify right side
    981,256.80x = 1,261,171,292,276.16
  5. Step 5: Solve for x
    x = 1,261,171,292,276.16/981,256.80
  6. Step 6: Final answer
    x = 1,285,261.20

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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.