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Finding the Fourth Proportional to 445,505.70, 667,480.95 and 383,297.70

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Solution

The fourth proportional to 445,505.70, 667,480.95 and 383,297.70 is: 574,277.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,505.70 : 667,480.95 = 383,297.70 : x
  2. Step 2: Convert to fraction form
    445,505.70/667,480.95 = 383,297.70/x
  3. Step 3: Cross multiply
    445,505.70x = 667,480.95 × 383,297.70
  4. Step 4: Simplify right side
    445,505.70x = 255,843,912,928.82
  5. Step 5: Solve for x
    x = 255,843,912,928.82/445,505.70
  6. Step 6: Final answer
    x = 574,277.53

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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.