Home / 792,000.20-1,188,000.30-259,392.80

Finding the Fourth Proportional to 792,000.20, 1,188,000.30 and 259,392.80

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Solution

The fourth proportional to 792,000.20, 1,188,000.30 and 259,392.80 is: 389,089.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    792,000.20 : 1,188,000.30 = 259,392.80 : x
  2. Step 2: Convert to fraction form
    792,000.20/1,188,000.30 = 259,392.80/x
  3. Step 3: Cross multiply
    792,000.20x = 1,188,000.30 × 259,392.80
  4. Step 4: Simplify right side
    792,000.20x = 308,158,724,217.84
  5. Step 5: Solve for x
    x = 308,158,724,217.84/792,000.20
  6. Step 6: Final answer
    x = 389,089.20

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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.