Home / 981,191,951.73-1,471,991,056.17-398,926,296.45

Finding the Fourth Proportional to 981,191,951.73, 1,471,991,056.17 and 398,926,296.45

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Solution

The fourth proportional to 981,191,951.73, 1,471,991,056.17 and 398,926,296.45 is: 598,472,031.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,191,951.73 : 1,471,991,056.17 = 398,926,296.45 : x
  2. Step 2: Convert to fraction form
    981,191,951.73/1,471,991,056.17 = 398,926,296.45/x
  3. Step 3: Cross multiply
    981,191,951.73x = 1,471,991,056.17 × 398,926,296.45
  4. Step 4: Simplify right side
    981,191,951.73x = 587,215,940,445,422,080
  5. Step 5: Solve for x
    x = 587,215,940,445,422,080/981,191,951.73
  6. Step 6: Final answer
    x = 598,472,031.30

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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.