Home / 809,419.20-1,214,128.80-248,380.80

Finding the Fourth Proportional to 809,419.20, 1,214,128.80 and 248,380.80

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Solution

The fourth proportional to 809,419.20, 1,214,128.80 and 248,380.80 is: 372,571.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,419.20 : 1,214,128.80 = 248,380.80 : x
  2. Step 2: Convert to fraction form
    809,419.20/1,214,128.80 = 248,380.80/x
  3. Step 3: Cross multiply
    809,419.20x = 1,214,128.80 × 248,380.80
  4. Step 4: Simplify right side
    809,419.20x = 301,566,282,647.04
  5. Step 5: Solve for x
    x = 301,566,282,647.04/809,419.20
  6. Step 6: Final answer
    x = 372,571.20

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Similar ratio
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1.5x scale

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.