Home / 505,496,979.40-758,245,469.10-198,799,097.80

Finding the Fourth Proportional to 505,496,979.40, 758,245,469.10 and 198,799,097.80

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Solution

The fourth proportional to 505,496,979.40, 758,245,469.10 and 198,799,097.80 is: 298,198,646.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,496,979.40 : 758,245,469.10 = 198,799,097.80 : x
  2. Step 2: Convert to fraction form
    505,496,979.40/758,245,469.10 = 198,799,097.80/x
  3. Step 3: Cross multiply
    505,496,979.40x = 758,245,469.10 × 198,799,097.80
  4. Step 4: Simplify right side
    505,496,979.40x = 150,738,515,168,017,792
  5. Step 5: Solve for x
    x = 150,738,515,168,017,792/505,496,979.40
  6. Step 6: Final answer
    x = 298,198,646.70

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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.