Home / 638,906,083,005.54-958,418,039,156.55-208,645,422,726.21

Finding the Fourth Proportional to 638,906,083,005.54, 958,418,039,156.55 and 208,645,422,726.21

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Solution

The fourth proportional to 638,906,083,005.54, 958,418,039,156.55 and 208,645,422,726.21 is: 312,987,373,648.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,906,083,005.54 : 958,418,039,156.55 = 208,645,422,726.21 : x
  2. Step 2: Convert to fraction form
    638,906,083,005.54/958,418,039,156.55 = 208,645,422,726.21/x
  3. Step 3: Cross multiply
    638,906,083,005.54x = 958,418,039,156.55 × 208,645,422,726.21
  4. Step 4: Simplify right side
    638,906,083,005.54x = 199,969,536,928,243,674,775,552
  5. Step 5: Solve for x
    x = 199,969,536,928,243,674,775,552/638,906,083,005.54
  6. Step 6: Final answer
    x = 312,987,373,648.95

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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.