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Finding the Fourth Proportional to 663,940.80, 996,040.80 and 264,513.60

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Solution

The fourth proportional to 663,940.80, 996,040.80 and 264,513.60 is: 396,822.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,940.80 : 996,040.80 = 264,513.60 : x
  2. Step 2: Convert to fraction form
    663,940.80/996,040.80 = 264,513.60/x
  3. Step 3: Cross multiply
    663,940.80x = 996,040.80 × 264,513.60
  4. Step 4: Simplify right side
    663,940.80x = 263,466,337,754.88
  5. Step 5: Solve for x
    x = 263,466,337,754.88/663,940.80
  6. Step 6: Final answer
    x = 396,822.03

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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.