Home / 500,490.54-690,685.92-274,121.46

Finding the Fourth Proportional to 500,490.54, 690,685.92 and 274,121.46

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Solution

The fourth proportional to 500,490.54, 690,685.92 and 274,121.46 is: 378,292.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,490.54 : 690,685.92 = 274,121.46 : x
  2. Step 2: Convert to fraction form
    500,490.54/690,685.92 = 274,121.46/x
  3. Step 3: Cross multiply
    500,490.54x = 690,685.92 × 274,121.46
  4. Step 4: Simplify right side
    500,490.54x = 189,331,832,791.84
  5. Step 5: Solve for x
    x = 189,331,832,791.84/500,490.54
  6. Step 6: Final answer
    x = 378,292.53

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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.