Home / 792,136.80-1,188,205.20-259,711.65

Finding the Fourth Proportional to 792,136.80, 1,188,205.20 and 259,711.65

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Solution

The fourth proportional to 792,136.80, 1,188,205.20 and 259,711.65 is: 389,567.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    792,136.80 : 1,188,205.20 = 259,711.65 : x
  2. Step 2: Convert to fraction form
    792,136.80/1,188,205.20 = 259,711.65/x
  3. Step 3: Cross multiply
    792,136.80x = 1,188,205.20 × 259,711.65
  4. Step 4: Simplify right side
    792,136.80x = 308,590,733,030.58
  5. Step 5: Solve for x
    x = 308,590,733,030.58/792,136.80
  6. Step 6: Final answer
    x = 389,567.48

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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.