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Finding the Fourth Proportional to 603,790.20, 905,555.70 and 266,830.20

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Solution

The fourth proportional to 603,790.20, 905,555.70 and 266,830.20 is: 400,188.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,790.20 : 905,555.70 = 266,830.20 : x
  2. Step 2: Convert to fraction form
    603,790.20/905,555.70 = 266,830.20/x
  3. Step 3: Cross multiply
    603,790.20x = 905,555.70 × 266,830.20
  4. Step 4: Simplify right side
    603,790.20x = 241,629,608,542.14
  5. Step 5: Solve for x
    x = 241,629,608,542.14/603,790.20
  6. Step 6: Final answer
    x = 400,188.03

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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.