Home / 638,906,083,012.10-958,418,039,166.30-208,645,422,732.74

Finding the Fourth Proportional to 638,906,083,012.10, 958,418,039,166.30 and 208,645,422,732.74

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Solution

The fourth proportional to 638,906,083,012.10, 958,418,039,166.30 and 208,645,422,732.74 is: 312,987,373,658.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,906,083,012.10 : 958,418,039,166.30 = 208,645,422,732.74 : x
  2. Step 2: Convert to fraction form
    638,906,083,012.10/958,418,039,166.30 = 208,645,422,732.74/x
  3. Step 3: Cross multiply
    638,906,083,012.10x = 958,418,039,166.30 × 208,645,422,732.74
  4. Step 4: Simplify right side
    638,906,083,012.10x = 199,969,536,936,536,417,763,328
  5. Step 5: Solve for x
    x = 199,969,536,936,536,417,763,328/638,906,083,012.10
  6. Step 6: Final answer
    x = 312,987,373,658.72

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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.