Home / 426,964,477.68-640,321,078.23-193,660,216.56

Finding the Fourth Proportional to 426,964,477.68, 640,321,078.23 and 193,660,216.56

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Solution

The fourth proportional to 426,964,477.68, 640,321,078.23 and 193,660,216.56 is: 290,433,338.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,964,477.68 : 640,321,078.23 = 193,660,216.56 : x
  2. Step 2: Convert to fraction form
    426,964,477.68/640,321,078.23 = 193,660,216.56/x
  3. Step 3: Cross multiply
    426,964,477.68x = 640,321,078.23 × 193,660,216.56
  4. Step 4: Simplify right side
    426,964,477.68x = 124,004,718,677,954,512
  5. Step 5: Solve for x
    x = 124,004,718,677,954,512/426,964,477.68
  6. Step 6: Final answer
    x = 290,433,338.51

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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.