Home / 843,619.80-1,265,540.70-311,514.60

Finding the Fourth Proportional to 843,619.80, 1,265,540.70 and 311,514.60

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Solution

The fourth proportional to 843,619.80, 1,265,540.70 and 311,514.60 is: 467,312.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    843,619.80 : 1,265,540.70 = 311,514.60 : x
  2. Step 2: Convert to fraction form
    843,619.80/1,265,540.70 = 311,514.60/x
  3. Step 3: Cross multiply
    843,619.80x = 1,265,540.70 × 311,514.60
  4. Step 4: Simplify right side
    843,619.80x = 394,234,404,944.22
  5. Step 5: Solve for x
    x = 394,234,404,944.22/843,619.80
  6. Step 6: Final answer
    x = 467,312.89

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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.