Home / 981,201,339.72-1,471,627,256.82-390,942,110.60

Finding the Fourth Proportional to 981,201,339.72, 1,471,627,256.82 and 390,942,110.60

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Solution

The fourth proportional to 981,201,339.72, 1,471,627,256.82 and 390,942,110.60 is: 586,343,538.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,201,339.72 : 1,471,627,256.82 = 390,942,110.60 : x
  2. Step 2: Convert to fraction form
    981,201,339.72/1,471,627,256.82 = 390,942,110.60/x
  3. Step 3: Cross multiply
    981,201,339.72x = 1,471,627,256.82 × 390,942,110.60
  4. Step 4: Simplify right side
    981,201,339.72x = 575,321,065,790,340,928
  5. Step 5: Solve for x
    x = 575,321,065,790,340,928/981,201,339.72
  6. Step 6: Final answer
    x = 586,343,538.78

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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.