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Finding the Fourth Proportional to 496,109.80, 743,343.90 and 285,380.20

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Solution

The fourth proportional to 496,109.80, 743,343.90 and 285,380.20 is: 427,598.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,109.80 : 743,343.90 = 285,380.20 : x
  2. Step 2: Convert to fraction form
    496,109.80/743,343.90 = 285,380.20/x
  3. Step 3: Cross multiply
    496,109.80x = 743,343.90 × 285,380.20
  4. Step 4: Simplify right side
    496,109.80x = 212,135,630,850.78
  5. Step 5: Solve for x
    x = 212,135,630,850.78/496,109.80
  6. Step 6: Final answer
    x = 427,598.15

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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.