Home / 792,138.40-1,188,207.60-259,676.80

Finding the Fourth Proportional to 792,138.40, 1,188,207.60 and 259,676.80

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Solution

The fourth proportional to 792,138.40, 1,188,207.60 and 259,676.80 is: 389,515.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    792,138.40 : 1,188,207.60 = 259,676.80 : x
  2. Step 2: Convert to fraction form
    792,138.40/1,188,207.60 = 259,676.80/x
  3. Step 3: Cross multiply
    792,138.40x = 1,188,207.60 × 259,676.80
  4. Step 4: Simplify right side
    792,138.40x = 308,549,947,303.68
  5. Step 5: Solve for x
    x = 308,549,947,303.68/792,138.40
  6. Step 6: Final answer
    x = 389,515.20

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Similar ratio
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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.