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Finding the Fourth Proportional to 512,825.20, 769,237.80 and 371,107.60

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Solution

The fourth proportional to 512,825.20, 769,237.80 and 371,107.60 is: 556,661.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,825.20 : 769,237.80 = 371,107.60 : x
  2. Step 2: Convert to fraction form
    512,825.20/769,237.80 = 371,107.60/x
  3. Step 3: Cross multiply
    512,825.20x = 769,237.80 × 371,107.60
  4. Step 4: Simplify right side
    512,825.20x = 285,469,993,787.28
  5. Step 5: Solve for x
    x = 285,469,993,787.28/512,825.20
  6. Step 6: Final answer
    x = 556,661.40

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Similar ratio
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1.5x scale

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.