Home / 3,978,766,991.19-5,490,715,517.97-2,170,318,270.93

Finding the Fourth Proportional to 3,978,766,991.19, 5,490,715,517.97 and 2,170,318,270.93

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Solution

The fourth proportional to 3,978,766,991.19, 5,490,715,517.97 and 2,170,318,270.93 is: 2,995,048,525.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,978,766,991.19 : 5,490,715,517.97 = 2,170,318,270.93 : x
  2. Step 2: Convert to fraction form
    3,978,766,991.19/5,490,715,517.97 = 2,170,318,270.93/x
  3. Step 3: Cross multiply
    3,978,766,991.19x = 5,490,715,517.97 × 2,170,318,270.93
  4. Step 4: Simplify right side
    3,978,766,991.19x = 11,916,600,209,115,443,200
  5. Step 5: Solve for x
    x = 11,916,600,209,115,443,200/3,978,766,991.19
  6. Step 6: Final answer
    x = 2,995,048,525.21

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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.