Home / 663,669.60-995,504.40-394,231.20

Finding the Fourth Proportional to 663,669.60, 995,504.40 and 394,231.20

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Solution

The fourth proportional to 663,669.60, 995,504.40 and 394,231.20 is: 591,346.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,669.60 : 995,504.40 = 394,231.20 : x
  2. Step 2: Convert to fraction form
    663,669.60/995,504.40 = 394,231.20/x
  3. Step 3: Cross multiply
    663,669.60x = 995,504.40 × 394,231.20
  4. Step 4: Simplify right side
    663,669.60x = 392,458,894,217.28
  5. Step 5: Solve for x
    x = 392,458,894,217.28/663,669.60
  6. Step 6: Final answer
    x = 591,346.80

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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.