Home / 500,527.28-690,727.60-274,172.72

Finding the Fourth Proportional to 500,527.28, 690,727.60 and 274,172.72

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Solution

The fourth proportional to 500,527.28, 690,727.60 and 274,172.72 is: 378,358.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,527.28 : 690,727.60 = 274,172.72 : x
  2. Step 2: Convert to fraction form
    500,527.28/690,727.60 = 274,172.72/x
  3. Step 3: Cross multiply
    500,527.28x = 690,727.60 × 274,172.72
  4. Step 4: Simplify right side
    500,527.28x = 189,378,664,871.07
  5. Step 5: Solve for x
    x = 189,378,664,871.07/500,527.28
  6. Step 6: Final answer
    x = 378,358.33

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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.