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Finding the Fourth Proportional to 636,418.97, 953,997.87 and 298,855.35

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Solution

The fourth proportional to 636,418.97, 953,997.87 and 298,855.35 is: 447,986.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,418.97 : 953,997.87 = 298,855.35 : x
  2. Step 2: Convert to fraction form
    636,418.97/953,997.87 = 298,855.35/x
  3. Step 3: Cross multiply
    636,418.97x = 953,997.87 × 298,855.35
  4. Step 4: Simplify right side
    636,418.97x = 285,107,367,338.11
  5. Step 5: Solve for x
    x = 285,107,367,338.11/636,418.97
  6. Step 6: Final answer
    x = 447,986.91

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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.