Home / 500,431.24-690,601.98-274,078.36

Finding the Fourth Proportional to 500,431.24, 690,601.98 and 274,078.36

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Solution

The fourth proportional to 500,431.24, 690,601.98 and 274,078.36 is: 378,231.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,431.24 : 690,601.98 = 274,078.36 : x
  2. Step 2: Convert to fraction form
    500,431.24/690,601.98 = 274,078.36/x
  3. Step 3: Cross multiply
    500,431.24x = 690,601.98 × 274,078.36
  4. Step 4: Simplify right side
    500,431.24x = 189,279,058,091.15
  5. Step 5: Solve for x
    x = 189,279,058,091.15/500,431.24
  6. Step 6: Final answer
    x = 378,231.90

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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.