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Finding the Fourth Proportional to 630,798.57, 945,229.23 and 428,131.44

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Solution

The fourth proportional to 630,798.57, 945,229.23 and 428,131.44 is: 641,539.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,798.57 : 945,229.23 = 428,131.44 : x
  2. Step 2: Convert to fraction form
    630,798.57/945,229.23 = 428,131.44/x
  3. Step 3: Cross multiply
    630,798.57x = 945,229.23 × 428,131.44
  4. Step 4: Simplify right side
    630,798.57x = 404,682,351,369.99
  5. Step 5: Solve for x
    x = 404,682,351,369.99/630,798.57
  6. Step 6: Final answer
    x = 641,539.74

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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.