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Finding the Fourth Proportional to 490,433.32, 734,716.86 and 279,431.56

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Solution

The fourth proportional to 490,433.32, 734,716.86 and 279,431.56 is: 418,615.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,433.32 : 734,716.86 = 279,431.56 : x
  2. Step 2: Convert to fraction form
    490,433.32/734,716.86 = 279,431.56/x
  3. Step 3: Cross multiply
    490,433.32x = 734,716.86 × 279,431.56
  4. Step 4: Simplify right side
    490,433.32x = 205,303,078,348.10
  5. Step 5: Solve for x
    x = 205,303,078,348.10/490,433.32
  6. Step 6: Final answer
    x = 418,615.68

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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.