Home / 863,138,812.20-1,294,708,218.30-494,295,138.60

Finding the Fourth Proportional to 863,138,812.20, 1,294,708,218.30 and 494,295,138.60

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Solution

The fourth proportional to 863,138,812.20, 1,294,708,218.30 and 494,295,138.60 is: 741,442,707.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,138,812.20 : 1,294,708,218.30 = 494,295,138.60 : x
  2. Step 2: Convert to fraction form
    863,138,812.20/1,294,708,218.30 = 494,295,138.60/x
  3. Step 3: Cross multiply
    863,138,812.20x = 1,294,708,218.30 × 494,295,138.60
  4. Step 4: Simplify right side
    863,138,812.20x = 639,967,978,211,157,504
  5. Step 5: Solve for x
    x = 639,967,978,211,157,504/863,138,812.20
  6. Step 6: Final answer
    x = 741,442,707.90

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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.