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Finding the Fourth Proportional to 512,338.80, 768,508.20 and 335,391.60

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Solution

The fourth proportional to 512,338.80, 768,508.20 and 335,391.60 is: 503,087.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,338.80 : 768,508.20 = 335,391.60 : x
  2. Step 2: Convert to fraction form
    512,338.80/768,508.20 = 335,391.60/x
  3. Step 3: Cross multiply
    512,338.80x = 768,508.20 × 335,391.60
  4. Step 4: Simplify right side
    512,338.80x = 257,751,194,811.12
  5. Step 5: Solve for x
    x = 257,751,194,811.12/512,338.80
  6. Step 6: Final answer
    x = 503,087.40

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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.