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Finding the Fourth Proportional to 418,479.58, 627,723.21 and 298,028.38

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Solution

The fourth proportional to 418,479.58, 627,723.21 and 298,028.38 is: 447,045.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,479.58 : 627,723.21 = 298,028.38 : x
  2. Step 2: Convert to fraction form
    418,479.58/627,723.21 = 298,028.38/x
  3. Step 3: Cross multiply
    418,479.58x = 627,723.21 × 298,028.38
  4. Step 4: Simplify right side
    418,479.58x = 187,079,331,364.70
  5. Step 5: Solve for x
    x = 187,079,331,364.70/418,479.58
  6. Step 6: Final answer
    x = 447,045.30

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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.