Home / 1,198,135.20-1,796,765.40-399,442.80

Finding the Fourth Proportional to 1,198,135.20, 1,796,765.40 and 399,442.80

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Solution

The fourth proportional to 1,198,135.20, 1,796,765.40 and 399,442.80 is: 599,018.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,198,135.20 : 1,796,765.40 = 399,442.80 : x
  2. Step 2: Convert to fraction form
    1,198,135.20/1,796,765.40 = 399,442.80/x
  3. Step 3: Cross multiply
    1,198,135.20x = 1,796,765.40 × 399,442.80
  4. Step 4: Simplify right side
    1,198,135.20x = 717,705,002,319.12
  5. Step 5: Solve for x
    x = 717,705,002,319.12/1,198,135.20
  6. Step 6: Final answer
    x = 599,018.38

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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.