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Finding the Fourth Proportional to 447,684.49, 671,415.99 and 279,118

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Solution

The fourth proportional to 447,684.49, 671,415.99 and 279,118 is: 418,607.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,684.49 : 671,415.99 = 279,118 : x
  2. Step 2: Convert to fraction form
    447,684.49/671,415.99 = 279,118/x
  3. Step 3: Cross multiply
    447,684.49x = 671,415.99 × 279,118
  4. Step 4: Simplify right side
    447,684.49x = 187,404,288,296.82
  5. Step 5: Solve for x
    x = 187,404,288,296.82/447,684.49
  6. Step 6: Final answer
    x = 418,607.95

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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.