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Finding the Fourth Proportional to 482,676.30, 663,731.28 and 418,903.38

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Solution

The fourth proportional to 482,676.30, 663,731.28 and 418,903.38 is: 576,036.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,676.30 : 663,731.28 = 418,903.38 : x
  2. Step 2: Convert to fraction form
    482,676.30/663,731.28 = 418,903.38/x
  3. Step 3: Cross multiply
    482,676.30x = 663,731.28 × 418,903.38
  4. Step 4: Simplify right side
    482,676.30x = 278,039,276,603.73
  5. Step 5: Solve for x
    x = 278,039,276,603.73/482,676.30
  6. Step 6: Final answer
    x = 576,036.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.