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Finding the Fourth Proportional to 638,269.71, 957,546.47 and 278,498.76

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Solution

The fourth proportional to 638,269.71, 957,546.47 and 278,498.76 is: 417,810.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,269.71 : 957,546.47 = 278,498.76 : x
  2. Step 2: Convert to fraction form
    638,269.71/957,546.47 = 278,498.76/x
  3. Step 3: Cross multiply
    638,269.71x = 957,546.47 × 278,498.76
  4. Step 4: Simplify right side
    638,269.71x = 266,675,504,537.38
  5. Step 5: Solve for x
    x = 266,675,504,537.38/638,269.71
  6. Step 6: Final answer
    x = 417,810.06

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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.