Home / 815,999.60-1,224,193.80-394,929.20

Finding the Fourth Proportional to 815,999.60, 1,224,193.80 and 394,929.20

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Solution

The fourth proportional to 815,999.60, 1,224,193.80 and 394,929.20 is: 592,487.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,999.60 : 1,224,193.80 = 394,929.20 : x
  2. Step 2: Convert to fraction form
    815,999.60/1,224,193.80 = 394,929.20/x
  3. Step 3: Cross multiply
    815,999.60x = 1,224,193.80 × 394,929.20
  4. Step 4: Simplify right side
    815,999.60x = 483,469,878,078.96
  5. Step 5: Solve for x
    x = 483,469,878,078.96/815,999.60
  6. Step 6: Final answer
    x = 592,487.89

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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.