Home / 500,198.06-690,339.04-285,288.86

Finding the Fourth Proportional to 500,198.06, 690,339.04 and 285,288.86

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Solution

The fourth proportional to 500,198.06, 690,339.04 and 285,288.86 is: 393,736.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,198.06 : 690,339.04 = 285,288.86 : x
  2. Step 2: Convert to fraction form
    500,198.06/690,339.04 = 285,288.86/x
  3. Step 3: Cross multiply
    500,198.06x = 690,339.04 × 285,288.86
  4. Step 4: Simplify right side
    500,198.06x = 196,946,037,735.09
  5. Step 5: Solve for x
    x = 196,946,037,735.09/500,198.06
  6. Step 6: Final answer
    x = 393,736.11

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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.