Home / 500,286.27-690,388.20-273,931.77

Finding the Fourth Proportional to 500,286.27, 690,388.20 and 273,931.77

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Solution

The fourth proportional to 500,286.27, 690,388.20 and 273,931.77 is: 378,022.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,286.27 : 690,388.20 = 273,931.77 : x
  2. Step 2: Convert to fraction form
    500,286.27/690,388.20 = 273,931.77/x
  3. Step 3: Cross multiply
    500,286.27x = 690,388.20 × 273,931.77
  4. Step 4: Simplify right side
    500,286.27x = 189,119,261,613.11
  5. Step 5: Solve for x
    x = 189,119,261,613.11/500,286.27
  6. Step 6: Final answer
    x = 378,022.09

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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.