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Finding the Fourth Proportional to 638,384.77, 957,805.80 and 273,493.27

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Solution

The fourth proportional to 638,384.77, 957,805.80 and 273,493.27 is: 410,337.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,384.77 : 957,805.80 = 273,493.27 : x
  2. Step 2: Convert to fraction form
    638,384.77/957,805.80 = 273,493.27/x
  3. Step 3: Cross multiply
    638,384.77x = 957,805.80 × 273,493.27
  4. Step 4: Simplify right side
    638,384.77x = 261,953,440,266.97
  5. Step 5: Solve for x
    x = 261,953,440,266.97/638,384.77
  6. Step 6: Final answer
    x = 410,337.86

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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.