Home / 981,280.80-1,471,921.20-887,968.80

Finding the Fourth Proportional to 981,280.80, 1,471,921.20 and 887,968.80

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Solution

The fourth proportional to 981,280.80, 1,471,921.20 and 887,968.80 is: 1,331,953.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,280.80 : 1,471,921.20 = 887,968.80 : x
  2. Step 2: Convert to fraction form
    981,280.80/1,471,921.20 = 887,968.80/x
  3. Step 3: Cross multiply
    981,280.80x = 1,471,921.20 × 887,968.80
  4. Step 4: Simplify right side
    981,280.80x = 1,307,020,101,658.56
  5. Step 5: Solve for x
    x = 1,307,020,101,658.56/981,280.80
  6. Step 6: Final answer
    x = 1,331,953.20

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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.