Home / 2,811,331.20-4,216,559.40-789,376.80

Finding the Fourth Proportional to 2,811,331.20, 4,216,559.40 and 789,376.80

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Solution

The fourth proportional to 2,811,331.20, 4,216,559.40 and 789,376.80 is: 1,183,942.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811,331.20 : 4,216,559.40 = 789,376.80 : x
  2. Step 2: Convert to fraction form
    2,811,331.20/4,216,559.40 = 789,376.80/x
  3. Step 3: Cross multiply
    2,811,331.20x = 4,216,559.40 × 789,376.80
  4. Step 4: Simplify right side
    2,811,331.20x = 3,328,454,166,181.92
  5. Step 5: Solve for x
    x = 3,328,454,166,181.92/2,811,331.20
  6. Step 6: Final answer
    x = 1,183,942.39

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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.