Home / 394,117,806,078.12-591,177,677,889.81-111,138,132,502.71

Finding the Fourth Proportional to 394,117,806,078.12, 591,177,677,889.81 and 111,138,132,502.71

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Solution

The fourth proportional to 394,117,806,078.12, 591,177,677,889.81 and 111,138,132,502.71 is: 166,707,471,940.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,117,806,078.12 : 591,177,677,889.81 = 111,138,132,502.71 : x
  2. Step 2: Convert to fraction form
    394,117,806,078.12/591,177,677,889.81 = 111,138,132,502.71/x
  3. Step 3: Cross multiply
    394,117,806,078.12x = 591,177,677,889.81 × 111,138,132,502.71
  4. Step 4: Simplify right side
    394,117,806,078.12x = 65,702,383,097,962,125,328,384
  5. Step 5: Solve for x
    x = 65,702,383,097,962,125,328,384/394,117,806,078.12
  6. Step 6: Final answer
    x = 166,707,471,940.35

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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.