Home / 500,286.28-690,388.20-273,931.78

Finding the Fourth Proportional to 500,286.28, 690,388.20 and 273,931.78

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Solution

The fourth proportional to 500,286.28, 690,388.20 and 273,931.78 is: 378,022.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,286.28 : 690,388.20 = 273,931.78 : x
  2. Step 2: Convert to fraction form
    500,286.28/690,388.20 = 273,931.78/x
  3. Step 3: Cross multiply
    500,286.28x = 690,388.20 × 273,931.78
  4. Step 4: Simplify right side
    500,286.28x = 189,119,268,517.00
  5. Step 5: Solve for x
    x = 189,119,268,517.00/500,286.28
  6. Step 6: Final answer
    x = 378,022.10

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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.