Home / 800,518.55-1,200,974.65-320,778.23

Finding the Fourth Proportional to 800,518.55, 1,200,974.65 and 320,778.23

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Solution

The fourth proportional to 800,518.55, 1,200,974.65 and 320,778.23 is: 481,246.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,518.55 : 1,200,974.65 = 320,778.23 : x
  2. Step 2: Convert to fraction form
    800,518.55/1,200,974.65 = 320,778.23/x
  3. Step 3: Cross multiply
    800,518.55x = 1,200,974.65 × 320,778.23
  4. Step 4: Simplify right side
    800,518.55x = 385,246,515,695.05
  5. Step 5: Solve for x
    x = 385,246,515,695.05/800,518.55
  6. Step 6: Final answer
    x = 481,246.21

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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.