Home / 780,436.11-1,170,515.96-211,861.37

Finding the Fourth Proportional to 780,436.11, 1,170,515.96 and 211,861.37

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Solution

The fourth proportional to 780,436.11, 1,170,515.96 and 211,861.37 is: 317,754.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,436.11 : 1,170,515.96 = 211,861.37 : x
  2. Step 2: Convert to fraction form
    780,436.11/1,170,515.96 = 211,861.37/x
  3. Step 3: Cross multiply
    780,436.11x = 1,170,515.96 × 211,861.37
  4. Step 4: Simplify right side
    780,436.11x = 247,987,118,745.65
  5. Step 5: Solve for x
    x = 247,987,118,745.65/780,436.11
  6. Step 6: Final answer
    x = 317,754.54

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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.