Home / 780,438.11-1,170,518.96-211,863.37

Finding the Fourth Proportional to 780,438.11, 1,170,518.96 and 211,863.37

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Solution

The fourth proportional to 780,438.11, 1,170,518.96 and 211,863.37 is: 317,757.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,438.11 : 1,170,518.96 = 211,863.37 : x
  2. Step 2: Convert to fraction form
    780,438.11/1,170,518.96 = 211,863.37/x
  3. Step 3: Cross multiply
    780,438.11x = 1,170,518.96 × 211,863.37
  4. Step 4: Simplify right side
    780,438.11x = 247,990,091,514.50
  5. Step 5: Solve for x
    x = 247,990,091,514.50/780,438.11
  6. Step 6: Final answer
    x = 317,757.54

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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.