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Finding the Fourth Proportional to 419,246.70, 628,870.05 and 324,768.30

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Solution

The fourth proportional to 419,246.70, 628,870.05 and 324,768.30 is: 487,152.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,246.70 : 628,870.05 = 324,768.30 : x
  2. Step 2: Convert to fraction form
    419,246.70/628,870.05 = 324,768.30/x
  3. Step 3: Cross multiply
    419,246.70x = 628,870.05 × 324,768.30
  4. Step 4: Simplify right side
    419,246.70x = 204,237,057,059.42
  5. Step 5: Solve for x
    x = 204,237,057,059.42/419,246.70
  6. Step 6: Final answer
    x = 487,152.45

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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.