Home / 8,380,903,785.65-12,561,003,912.09-7,192,128,228.95

Finding the Fourth Proportional to 8,380,903,785.65, 12,561,003,912.09 and 7,192,128,228.95

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Solution

The fourth proportional to 8,380,903,785.65, 12,561,003,912.09 and 7,192,128,228.95 is: 10,779,308,906.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,380,903,785.65 : 12,561,003,912.09 = 7,192,128,228.95 : x
  2. Step 2: Convert to fraction form
    8,380,903,785.65/12,561,003,912.09 = 7,192,128,228.95/x
  3. Step 3: Cross multiply
    8,380,903,785.65x = 12,561,003,912.09 × 7,192,128,228.95
  4. Step 4: Simplify right side
    8,380,903,785.65x = 90,340,350,820,093,870,080
  5. Step 5: Solve for x
    x = 90,340,350,820,093,870,080/8,380,903,785.65
  6. Step 6: Final answer
    x = 10,779,308,906.37

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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.