Home / 638,906,083,007.04-958,418,039,158.80-208,645,422,727.72

Finding the Fourth Proportional to 638,906,083,007.04, 958,418,039,158.80 and 208,645,422,727.72

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Solution

The fourth proportional to 638,906,083,007.04, 958,418,039,158.80 and 208,645,422,727.72 is: 312,987,373,651.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,906,083,007.04 : 958,418,039,158.80 = 208,645,422,727.72 : x
  2. Step 2: Convert to fraction form
    638,906,083,007.04/958,418,039,158.80 = 208,645,422,727.72/x
  3. Step 3: Cross multiply
    638,906,083,007.04x = 958,418,039,158.80 × 208,645,422,727.72
  4. Step 4: Simplify right side
    638,906,083,007.04x = 199,969,536,930,160,337,485,824
  5. Step 5: Solve for x
    x = 199,969,536,930,160,337,485,824/638,906,083,007.04
  6. Step 6: Final answer
    x = 312,987,373,651.22

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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.