Home / 792,136.80-1,188,788.40-319,161.60

Finding the Fourth Proportional to 792,136.80, 1,188,788.40 and 319,161.60

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Solution

The fourth proportional to 792,136.80, 1,188,788.40 and 319,161.60 is: 478,977.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    792,136.80 : 1,188,788.40 = 319,161.60 : x
  2. Step 2: Convert to fraction form
    792,136.80/1,188,788.40 = 319,161.60/x
  3. Step 3: Cross multiply
    792,136.80x = 1,188,788.40 × 319,161.60
  4. Step 4: Simplify right side
    792,136.80x = 379,415,607,805.44
  5. Step 5: Solve for x
    x = 379,415,607,805.44/792,136.80
  6. Step 6: Final answer
    x = 478,977.38

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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.