Home / 1,328,052,887.16-1,991,942,452.08-442,642,578.36

Finding the Fourth Proportional to 1,328,052,887.16, 1,991,942,452.08 and 442,642,578.36

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Solution

The fourth proportional to 1,328,052,887.16, 1,991,942,452.08 and 442,642,578.36 is: 663,918,245.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,052,887.16 : 1,991,942,452.08 = 442,642,578.36 : x
  2. Step 2: Convert to fraction form
    1,328,052,887.16/1,991,942,452.08 = 442,642,578.36/x
  3. Step 3: Cross multiply
    1,328,052,887.16x = 1,991,942,452.08 × 442,642,578.36
  4. Step 4: Simplify right side
    1,328,052,887.16x = 881,718,542,933,431,936
  5. Step 5: Solve for x
    x = 881,718,542,933,431,936/1,328,052,887.16
  6. Step 6: Final answer
    x = 663,918,245.62

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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.