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Finding the Fourth Proportional to 494,433.80, 741,650.70 and 420,950.60

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Solution

The fourth proportional to 494,433.80, 741,650.70 and 420,950.60 is: 631,425.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,433.80 : 741,650.70 = 420,950.60 : x
  2. Step 2: Convert to fraction form
    494,433.80/741,650.70 = 420,950.60/x
  3. Step 3: Cross multiply
    494,433.80x = 741,650.70 × 420,950.60
  4. Step 4: Simplify right side
    494,433.80x = 312,198,307,155.42
  5. Step 5: Solve for x
    x = 312,198,307,155.42/494,433.80
  6. Step 6: Final answer
    x = 631,425.90

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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.