Home / 3,978,766,990.88-5,490,715,517.54-2,170,318,270.61

Finding the Fourth Proportional to 3,978,766,990.88, 5,490,715,517.54 and 2,170,318,270.61

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Solution

The fourth proportional to 3,978,766,990.88, 5,490,715,517.54 and 2,170,318,270.61 is: 2,995,048,524.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,978,766,990.88 : 5,490,715,517.54 = 2,170,318,270.61 : x
  2. Step 2: Convert to fraction form
    3,978,766,990.88/5,490,715,517.54 = 2,170,318,270.61/x
  3. Step 3: Cross multiply
    3,978,766,990.88x = 5,490,715,517.54 × 2,170,318,270.61
  4. Step 4: Simplify right side
    3,978,766,990.88x = 11,916,600,206,438,903,808
  5. Step 5: Solve for x
    x = 11,916,600,206,438,903,808/3,978,766,990.88
  6. Step 6: Final answer
    x = 2,995,048,524.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.