Home / 786,432,481.74-1,179,840,786.76-261,800,570.16

Finding the Fourth Proportional to 786,432,481.74, 1,179,840,786.76 and 261,800,570.16

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Solution

The fourth proportional to 786,432,481.74, 1,179,840,786.76 and 261,800,570.16 is: 392,764,792.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,432,481.74 : 1,179,840,786.76 = 261,800,570.16 : x
  2. Step 2: Convert to fraction form
    786,432,481.74/1,179,840,786.76 = 261,800,570.16/x
  3. Step 3: Cross multiply
    786,432,481.74x = 1,179,840,786.76 × 261,800,570.16
  4. Step 4: Simplify right side
    786,432,481.74x = 308,882,990,671,790,976
  5. Step 5: Solve for x
    x = 308,882,990,671,790,976/786,432,481.74
  6. Step 6: Final answer
    x = 392,764,792.71

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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.