Home / 2,079,999.71-3,120,334.83-640,682.45

Finding the Fourth Proportional to 2,079,999.71, 3,120,334.83 and 640,682.45

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Solution

The fourth proportional to 2,079,999.71, 3,120,334.83 and 640,682.45 is: 961,126.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079,999.71 : 3,120,334.83 = 640,682.45 : x
  2. Step 2: Convert to fraction form
    2,079,999.71/3,120,334.83 = 640,682.45/x
  3. Step 3: Cross multiply
    2,079,999.71x = 3,120,334.83 × 640,682.45
  4. Step 4: Simplify right side
    2,079,999.71x = 1,999,143,763,704.73
  5. Step 5: Solve for x
    x = 1,999,143,763,704.73/2,079,999.71
  6. Step 6: Final answer
    x = 961,126.94

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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.