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Finding the Fourth Proportional to 408,464.70, 611,487.45 and 303,747.90

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Solution

The fourth proportional to 408,464.70, 611,487.45 and 303,747.90 is: 454,722.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,464.70 : 611,487.45 = 303,747.90 : x
  2. Step 2: Convert to fraction form
    408,464.70/611,487.45 = 303,747.90/x
  3. Step 3: Cross multiply
    408,464.70x = 611,487.45 × 303,747.90
  4. Step 4: Simplify right side
    408,464.70x = 185,738,028,813.86
  5. Step 5: Solve for x
    x = 185,738,028,813.86/408,464.70
  6. Step 6: Final answer
    x = 454,722.35

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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.