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Finding the Fourth Proportional to 500,912.75, 691,259.73 and 274,572.83

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Solution

The fourth proportional to 500,912.75, 691,259.73 and 274,572.83 is: 378,910.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,912.75 : 691,259.73 = 274,572.83 : x
  2. Step 2: Convert to fraction form
    500,912.75/691,259.73 = 274,572.83/x
  3. Step 3: Cross multiply
    500,912.75x = 691,259.73 × 274,572.83
  4. Step 4: Simplify right side
    500,912.75x = 189,801,140,331.14
  5. Step 5: Solve for x
    x = 189,801,140,331.14/500,912.75
  6. Step 6: Final answer
    x = 378,910.58

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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.