Home / 792,129.40-1,188,194.10-259,667.80

Finding the Fourth Proportional to 792,129.40, 1,188,194.10 and 259,667.80

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Solution

The fourth proportional to 792,129.40, 1,188,194.10 and 259,667.80 is: 389,501.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    792,129.40 : 1,188,194.10 = 259,667.80 : x
  2. Step 2: Convert to fraction form
    792,129.40/1,188,194.10 = 259,667.80/x
  3. Step 3: Cross multiply
    792,129.40x = 1,188,194.10 × 259,667.80
  4. Step 4: Simplify right side
    792,129.40x = 308,535,747,919.98
  5. Step 5: Solve for x
    x = 308,535,747,919.98/792,129.40
  6. Step 6: Final answer
    x = 389,501.70

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.