Home / 398,660,096.80-597,990,145.20-391,941,632.80

Finding the Fourth Proportional to 398,660,096.80, 597,990,145.20 and 391,941,632.80

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Solution

The fourth proportional to 398,660,096.80, 597,990,145.20 and 391,941,632.80 is: 587,912,449.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,660,096.80 : 597,990,145.20 = 391,941,632.80 : x
  2. Step 2: Convert to fraction form
    398,660,096.80/597,990,145.20 = 391,941,632.80/x
  3. Step 3: Cross multiply
    398,660,096.80x = 597,990,145.20 × 391,941,632.80
  4. Step 4: Simplify right side
    398,660,096.80x = 234,377,233,907,997,120
  5. Step 5: Solve for x
    x = 234,377,233,907,997,120/398,660,096.80
  6. Step 6: Final answer
    x = 587,912,449.20

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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.