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Finding the Fourth Proportional to 620,794.70, 930,720.01 and 321,084.44

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Solution

The fourth proportional to 620,794.70, 930,720.01 and 321,084.44 is: 481,382.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,794.70 : 930,720.01 = 321,084.44 : x
  2. Step 2: Convert to fraction form
    620,794.70/930,720.01 = 321,084.44/x
  3. Step 3: Cross multiply
    620,794.70x = 930,720.01 × 321,084.44
  4. Step 4: Simplify right side
    620,794.70x = 298,839,713,207.64
  5. Step 5: Solve for x
    x = 298,839,713,207.64/620,794.70
  6. Step 6: Final answer
    x = 481,382.51

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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.