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Finding the Fourth Proportional to 418,478.58, 627,721.71 and 298,027.38

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Solution

The fourth proportional to 418,478.58, 627,721.71 and 298,027.38 is: 447,043.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,478.58 : 627,721.71 = 298,027.38 : x
  2. Step 2: Convert to fraction form
    418,478.58/627,721.71 = 298,027.38/x
  3. Step 3: Cross multiply
    418,478.58x = 627,721.71 × 298,027.38
  4. Step 4: Simplify right side
    418,478.58x = 187,078,256,600.42
  5. Step 5: Solve for x
    x = 187,078,256,600.42/418,478.58
  6. Step 6: Final answer
    x = 447,043.80

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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.