Home / 662,979.40-993,885.90-396,845.80

Finding the Fourth Proportional to 662,979.40, 993,885.90 and 396,845.80

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Solution

The fourth proportional to 662,979.40, 993,885.90 and 396,845.80 is: 594,919.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,979.40 : 993,885.90 = 396,845.80 : x
  2. Step 2: Convert to fraction form
    662,979.40/993,885.90 = 396,845.80/x
  3. Step 3: Cross multiply
    662,979.40x = 993,885.90 × 396,845.80
  4. Step 4: Simplify right side
    662,979.40x = 394,419,445,094.22
  5. Step 5: Solve for x
    x = 394,419,445,094.22/662,979.40
  6. Step 6: Final answer
    x = 594,919.61

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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.