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Finding the Fourth Proportional to 490,832.80, 736,940.40 and 385,770.40

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Solution

The fourth proportional to 490,832.80, 736,940.40 and 385,770.40 is: 579,198.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,832.80 : 736,940.40 = 385,770.40 : x
  2. Step 2: Convert to fraction form
    490,832.80/736,940.40 = 385,770.40/x
  3. Step 3: Cross multiply
    490,832.80x = 736,940.40 × 385,770.40
  4. Step 4: Simplify right side
    490,832.80x = 284,289,792,884.16
  5. Step 5: Solve for x
    x = 284,289,792,884.16/490,832.80
  6. Step 6: Final answer
    x = 579,198.85

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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.