Home / 491,180,545.97-678,135,114.31-312,665,196.11

Finding the Fourth Proportional to 491,180,545.97, 678,135,114.31 and 312,665,196.11

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Solution

The fourth proportional to 491,180,545.97, 678,135,114.31 and 312,665,196.11 is: 431,672,732.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,180,545.97 : 678,135,114.31 = 312,665,196.11 : x
  2. Step 2: Convert to fraction form
    491,180,545.97/678,135,114.31 = 312,665,196.11/x
  3. Step 3: Cross multiply
    491,180,545.97x = 678,135,114.31 × 312,665,196.11
  4. Step 4: Simplify right side
    491,180,545.97x = 212,029,248,504,813,408
  5. Step 5: Solve for x
    x = 212,029,248,504,813,408/491,180,545.97
  6. Step 6: Final answer
    x = 431,672,732.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.