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Finding the Fourth Proportional to 603,441.30, 905,680.35 and 266,999.70

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Solution

The fourth proportional to 603,441.30, 905,680.35 and 266,999.70 is: 400,728.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,441.30 : 905,680.35 = 266,999.70 : x
  2. Step 2: Convert to fraction form
    603,441.30/905,680.35 = 266,999.70/x
  3. Step 3: Cross multiply
    603,441.30x = 905,680.35 × 266,999.70
  4. Step 4: Simplify right side
    603,441.30x = 241,816,381,745.90
  5. Step 5: Solve for x
    x = 241,816,381,745.90/603,441.30
  6. Step 6: Final answer
    x = 400,728.92

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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.