Home / 398,990,762.20-598,486,143.30-262,829,891.80

Finding the Fourth Proportional to 398,990,762.20, 598,486,143.30 and 262,829,891.80

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Solution

The fourth proportional to 398,990,762.20, 598,486,143.30 and 262,829,891.80 is: 394,244,837.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,990,762.20 : 598,486,143.30 = 262,829,891.80 : x
  2. Step 2: Convert to fraction form
    398,990,762.20/598,486,143.30 = 262,829,891.80/x
  3. Step 3: Cross multiply
    398,990,762.20x = 598,486,143.30 × 262,829,891.80
  4. Step 4: Simplify right side
    398,990,762.20x = 157,300,048,287,338,304
  5. Step 5: Solve for x
    x = 157,300,048,287,338,304/398,990,762.20
  6. Step 6: Final answer
    x = 394,244,837.70

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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.