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Finding the Fourth Proportional to 414,433.60, 620,613.60 and 331,489.60

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Solution

The fourth proportional to 414,433.60, 620,613.60 and 331,489.60 is: 496,405.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,433.60 : 620,613.60 = 331,489.60 : x
  2. Step 2: Convert to fraction form
    414,433.60/620,613.60 = 331,489.60/x
  3. Step 3: Cross multiply
    414,433.60x = 620,613.60 × 331,489.60
  4. Step 4: Simplify right side
    414,433.60x = 205,726,954,018.56
  5. Step 5: Solve for x
    x = 205,726,954,018.56/414,433.60
  6. Step 6: Final answer
    x = 496,405.10

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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.