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Finding the Fourth Proportional to 483,381.45, 667,085.33 and 330,739.79

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Solution

The fourth proportional to 483,381.45, 667,085.33 and 330,739.79 is: 456,433.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,381.45 : 667,085.33 = 330,739.79 : x
  2. Step 2: Convert to fraction form
    483,381.45/667,085.33 = 330,739.79/x
  3. Step 3: Cross multiply
    483,381.45x = 667,085.33 × 330,739.79
  4. Step 4: Simplify right side
    483,381.45x = 220,631,661,956.28
  5. Step 5: Solve for x
    x = 220,631,661,956.28/483,381.45
  6. Step 6: Final answer
    x = 456,433.86

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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.