Home / 659,589,989.70-989,133,042.15-199,375,205.70

Finding the Fourth Proportional to 659,589,989.70, 989,133,042.15 and 199,375,205.70

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Solution

The fourth proportional to 659,589,989.70, 989,133,042.15 and 199,375,205.70 is: 298,986,653.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,589,989.70 : 989,133,042.15 = 199,375,205.70 : x
  2. Step 2: Convert to fraction form
    659,589,989.70/989,133,042.15 = 199,375,205.70/x
  3. Step 3: Cross multiply
    659,589,989.70x = 989,133,042.15 × 199,375,205.70
  4. Step 4: Simplify right side
    659,589,989.70x = 197,208,603,743,323,008
  5. Step 5: Solve for x
    x = 197,208,603,743,323,008/659,589,989.70
  6. Step 6: Final answer
    x = 298,986,653.56

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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.