Home / 398,660,086.80-597,990,130.20-391,941,622.80

Finding the Fourth Proportional to 398,660,086.80, 597,990,130.20 and 391,941,622.80

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Solution

The fourth proportional to 398,660,086.80, 597,990,130.20 and 391,941,622.80 is: 587,912,434.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,660,086.80 : 597,990,130.20 = 391,941,622.80 : x
  2. Step 2: Convert to fraction form
    398,660,086.80/597,990,130.20 = 391,941,622.80/x
  3. Step 3: Cross multiply
    398,660,086.80x = 597,990,130.20 × 391,941,622.80
  4. Step 4: Simplify right side
    398,660,086.80x = 234,377,222,048,971,328
  5. Step 5: Solve for x
    x = 234,377,222,048,971,328/398,660,086.80
  6. Step 6: Final answer
    x = 587,912,434.20

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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.