Home / 3,985,902,086.40-5,978,853,129.60-2,149,241,990.40

Finding the Fourth Proportional to 3,985,902,086.40, 5,978,853,129.60 and 2,149,241,990.40

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Solution

The fourth proportional to 3,985,902,086.40, 5,978,853,129.60 and 2,149,241,990.40 is: 3,223,862,985.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985,902,086.40 : 5,978,853,129.60 = 2,149,241,990.40 : x
  2. Step 2: Convert to fraction form
    3,985,902,086.40/5,978,853,129.60 = 2,149,241,990.40/x
  3. Step 3: Cross multiply
    3,985,902,086.40x = 5,978,853,129.60 × 2,149,241,990.40
  4. Step 4: Simplify right side
    3,985,902,086.40x = 12,850,002,200,570,775,552
  5. Step 5: Solve for x
    x = 12,850,002,200,570,775,552/3,985,902,086.40
  6. Step 6: Final answer
    x = 3,223,862,985.60

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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.