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Finding the Fourth Proportional to 483,639.52, 667,369.50 and 279,659.65

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Solution

The fourth proportional to 483,639.52, 667,369.50 and 279,659.65 is: 385,899.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,639.52 : 667,369.50 = 279,659.65 : x
  2. Step 2: Convert to fraction form
    483,639.52/667,369.50 = 279,659.65/x
  3. Step 3: Cross multiply
    483,639.52x = 667,369.50 × 279,659.65
  4. Step 4: Simplify right side
    483,639.52x = 186,636,320,790.68
  5. Step 5: Solve for x
    x = 186,636,320,790.68/483,639.52
  6. Step 6: Final answer
    x = 385,899.65

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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.