Home / 816,054.40-1,222,623.60-394,400.80

Finding the Fourth Proportional to 816,054.40, 1,222,623.60 and 394,400.80

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Solution

The fourth proportional to 816,054.40, 1,222,623.60 and 394,400.80 is: 590,896.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,054.40 : 1,222,623.60 = 394,400.80 : x
  2. Step 2: Convert to fraction form
    816,054.40/1,222,623.60 = 394,400.80/x
  3. Step 3: Cross multiply
    816,054.40x = 1,222,623.60 × 394,400.80
  4. Step 4: Simplify right side
    816,054.40x = 482,203,725,938.88
  5. Step 5: Solve for x
    x = 482,203,725,938.88/816,054.40
  6. Step 6: Final answer
    x = 590,896.55

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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.