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Finding the Fourth Proportional to 419,472.52, 628,586.58 and 308,120.20

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Solution

The fourth proportional to 419,472.52, 628,586.58 and 308,120.20 is: 461,723.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,472.52 : 628,586.58 = 308,120.20 : x
  2. Step 2: Convert to fraction form
    419,472.52/628,586.58 = 308,120.20/x
  3. Step 3: Cross multiply
    419,472.52x = 628,586.58 × 308,120.20
  4. Step 4: Simplify right side
    419,472.52x = 193,680,222,746.92
  5. Step 5: Solve for x
    x = 193,680,222,746.92/419,472.52
  6. Step 6: Final answer
    x = 461,723.27

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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.