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Finding the Fourth Proportional to 490,225.42, 734,815.41 and 279,409.42

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Solution

The fourth proportional to 490,225.42, 734,815.41 and 279,409.42 is: 418,816.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,225.42 : 734,815.41 = 279,409.42 : x
  2. Step 2: Convert to fraction form
    490,225.42/734,815.41 = 279,409.42/x
  3. Step 3: Cross multiply
    490,225.42x = 734,815.41 × 279,409.42
  4. Step 4: Simplify right side
    490,225.42x = 205,314,347,515.16
  5. Step 5: Solve for x
    x = 205,314,347,515.16/490,225.42
  6. Step 6: Final answer
    x = 418,816.20

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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.