Home / 1,206,420,727.68-1,809,922,819.20-419,360,757.12

Finding the Fourth Proportional to 1,206,420,727.68, 1,809,922,819.20 and 419,360,757.12

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Solution

The fourth proportional to 1,206,420,727.68, 1,809,922,819.20 and 419,360,757.12 is: 629,142,542.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,206,420,727.68 : 1,809,922,819.20 = 419,360,757.12 : x
  2. Step 2: Convert to fraction form
    1,206,420,727.68/1,809,922,819.20 = 419,360,757.12/x
  3. Step 3: Cross multiply
    1,206,420,727.68x = 1,809,922,819.20 × 419,360,757.12
  4. Step 4: Simplify right side
    1,206,420,727.68x = 759,010,603,788,476,928
  5. Step 5: Solve for x
    x = 759,010,603,788,476,928/1,206,420,727.68
  6. Step 6: Final answer
    x = 629,142,542.38

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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.