Home / 981,151.80-1,471,727.70-645,228.60

Finding the Fourth Proportional to 981,151.80, 1,471,727.70 and 645,228.60

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Solution

The fourth proportional to 981,151.80, 1,471,727.70 and 645,228.60 is: 967,842.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,151.80 : 1,471,727.70 = 645,228.60 : x
  2. Step 2: Convert to fraction form
    981,151.80/1,471,727.70 = 645,228.60/x
  3. Step 3: Cross multiply
    981,151.80x = 1,471,727.70 × 645,228.60
  4. Step 4: Simplify right side
    981,151.80x = 949,600,803,452.22
  5. Step 5: Solve for x
    x = 949,600,803,452.22/981,151.80
  6. Step 6: Final answer
    x = 967,842.90

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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.