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Finding the Fourth Proportional to 449,618.66, 671,147.98 and 392,867.14

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Solution

The fourth proportional to 449,618.66, 671,147.98 and 392,867.14 is: 586,434.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,618.66 : 671,147.98 = 392,867.14 : x
  2. Step 2: Convert to fraction form
    449,618.66/671,147.98 = 392,867.14/x
  3. Step 3: Cross multiply
    449,618.66x = 671,147.98 × 392,867.14
  4. Step 4: Simplify right side
    449,618.66x = 263,671,987,419.38
  5. Step 5: Solve for x
    x = 263,671,987,419.38/449,618.66
  6. Step 6: Final answer
    x = 586,434.71

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.