Home / 638,771.39-958,787.55-339,251.12

Finding the Fourth Proportional to 638,771.39, 958,787.55 and 339,251.12

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Solution

The fourth proportional to 638,771.39, 958,787.55 and 339,251.12 is: 509,211.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,771.39 : 958,787.55 = 339,251.12 : x
  2. Step 2: Convert to fraction form
    638,771.39/958,787.55 = 339,251.12/x
  3. Step 3: Cross multiply
    638,771.39x = 958,787.55 × 339,251.12
  4. Step 4: Simplify right side
    638,771.39x = 325,269,745,385.62
  5. Step 5: Solve for x
    x = 325,269,745,385.62/638,771.39
  6. Step 6: Final answer
    x = 509,211.52

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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.