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Finding the Fourth Proportional to 447,683.49, 671,414.49 and 279,117

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Solution

The fourth proportional to 447,683.49, 671,414.49 and 279,117 is: 418,606.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,683.49 : 671,414.49 = 279,117 : x
  2. Step 2: Convert to fraction form
    447,683.49/671,414.49 = 279,117/x
  3. Step 3: Cross multiply
    447,683.49x = 671,414.49 × 279,117
  4. Step 4: Simplify right side
    447,683.49x = 187,403,198,205.33
  5. Step 5: Solve for x
    x = 187,403,198,205.33/447,683.49
  6. Step 6: Final answer
    x = 418,606.45

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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.