Home / 408,739,939.20-613,109,908.80-263,621,116.80

Finding the Fourth Proportional to 408,739,939.20, 613,109,908.80 and 263,621,116.80

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Solution

The fourth proportional to 408,739,939.20, 613,109,908.80 and 263,621,116.80 is: 395,431,675.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,739,939.20 : 613,109,908.80 = 263,621,116.80 : x
  2. Step 2: Convert to fraction form
    408,739,939.20/613,109,908.80 = 263,621,116.80/x
  3. Step 3: Cross multiply
    408,739,939.20x = 613,109,908.80 × 263,621,116.80
  4. Step 4: Simplify right side
    408,739,939.20x = 161,628,718,879,002,144
  5. Step 5: Solve for x
    x = 161,628,718,879,002,144/408,739,939.20
  6. Step 6: Final answer
    x = 395,431,675.20

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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.