Home / 445,711,990.80-668,567,986.20-343,675,318.80

Finding the Fourth Proportional to 445,711,990.80, 668,567,986.20 and 343,675,318.80

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Solution

The fourth proportional to 445,711,990.80, 668,567,986.20 and 343,675,318.80 is: 515,512,978.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,711,990.80 : 668,567,986.20 = 343,675,318.80 : x
  2. Step 2: Convert to fraction form
    445,711,990.80/668,567,986.20 = 343,675,318.80/x
  3. Step 3: Cross multiply
    445,711,990.80x = 668,567,986.20 × 343,675,318.80
  4. Step 4: Simplify right side
    445,711,990.80x = 229,770,315,796,759,040
  5. Step 5: Solve for x
    x = 229,770,315,796,759,040/445,711,990.80
  6. Step 6: Final answer
    x = 515,512,978.20

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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.