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Finding the Fourth Proportional to 540,794.20, 809,636.10 and 330,842.20

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Solution

The fourth proportional to 540,794.20, 809,636.10 and 330,842.20 is: 495,311.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,794.20 : 809,636.10 = 330,842.20 : x
  2. Step 2: Convert to fraction form
    540,794.20/809,636.10 = 330,842.20/x
  3. Step 3: Cross multiply
    540,794.20x = 809,636.10 × 330,842.20
  4. Step 4: Simplify right side
    540,794.20x = 267,861,788,523.42
  5. Step 5: Solve for x
    x = 267,861,788,523.42/540,794.20
  6. Step 6: Final answer
    x = 495,311.87

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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.