Home / 792,139.20-1,188,208.80-259,531.80

Finding the Fourth Proportional to 792,139.20, 1,188,208.80 and 259,531.80

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Solution

The fourth proportional to 792,139.20, 1,188,208.80 and 259,531.80 is: 389,297.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    792,139.20 : 1,188,208.80 = 259,531.80 : x
  2. Step 2: Convert to fraction form
    792,139.20/1,188,208.80 = 259,531.80/x
  3. Step 3: Cross multiply
    792,139.20x = 1,188,208.80 × 259,531.80
  4. Step 4: Simplify right side
    792,139.20x = 308,377,968,639.84
  5. Step 5: Solve for x
    x = 308,377,968,639.84/792,139.20
  6. Step 6: Final answer
    x = 389,297.70

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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.