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Finding the Fourth Proportional to 483,458.70, 667,133.85 and 279,522.72

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Solution

The fourth proportional to 483,458.70, 667,133.85 and 279,522.72 is: 385,718.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,458.70 : 667,133.85 = 279,522.72 : x
  2. Step 2: Convert to fraction form
    483,458.70/667,133.85 = 279,522.72/x
  3. Step 3: Cross multiply
    483,458.70x = 667,133.85 × 279,522.72
  4. Step 4: Simplify right side
    483,458.70x = 186,479,068,356.07
  5. Step 5: Solve for x
    x = 186,479,068,356.07/483,458.70
  6. Step 6: Final answer
    x = 385,718.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.