Home / 1,099,420,012.56-1,517,188,927.81-818,419,074.78

Finding the Fourth Proportional to 1,099,420,012.56, 1,517,188,927.81 and 818,419,074.78

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Solution

The fourth proportional to 1,099,420,012.56, 1,517,188,927.81 and 818,419,074.78 is: 1,129,410,365.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,099,420,012.56 : 1,517,188,927.81 = 818,419,074.78 : x
  2. Step 2: Convert to fraction form
    1,099,420,012.56/1,517,188,927.81 = 818,419,074.78/x
  3. Step 3: Cross multiply
    1,099,420,012.56x = 1,517,188,927.81 × 818,419,074.78
  4. Step 4: Simplify right side
    1,099,420,012.56x = 1,241,696,358,564,720,384
  5. Step 5: Solve for x
    x = 1,241,696,358,564,720,384/1,099,420,012.56
  6. Step 6: Final answer
    x = 1,129,410,365.81

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1.5x scale

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.