Home / 2,831,919,906.80-3,908,065,849.80-1,578,934,768.88

Finding the Fourth Proportional to 2,831,919,906.80, 3,908,065,849.80 and 1,578,934,768.88

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Solution

The fourth proportional to 2,831,919,906.80, 3,908,065,849.80 and 1,578,934,768.88 is: 2,178,939,112.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831,919,906.80 : 3,908,065,849.80 = 1,578,934,768.88 : x
  2. Step 2: Convert to fraction form
    2,831,919,906.80/3,908,065,849.80 = 1,578,934,768.88/x
  3. Step 3: Cross multiply
    2,831,919,906.80x = 3,908,065,849.80 × 1,578,934,768.88
  4. Step 4: Simplify right side
    2,831,919,906.80x = 6,170,581,049,321,784,320
  5. Step 5: Solve for x
    x = 6,170,581,049,321,784,320/2,831,919,906.80
  6. Step 6: Final answer
    x = 2,178,939,112.83

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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.