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Finding the Fourth Proportional to 981,940.40, 1,470,286.20 and 981,940.40

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Solution

The fourth proportional to 981,940.40, 1,470,286.20 and 981,940.40 is: 1,470,286.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,940.40 : 1,470,286.20 = 981,940.40 : x
  2. Step 2: Convert to fraction form
    981,940.40/1,470,286.20 = 981,940.40/x
  3. Step 3: Cross multiply
    981,940.40x = 1,470,286.20 × 981,940.40
  4. Step 4: Simplify right side
    981,940.40x = 1,443,733,419,342.48
  5. Step 5: Solve for x
    x = 1,443,733,419,342.48/981,940.40
  6. Step 6: Final answer
    x = 1,470,286.20

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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.