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Finding the Fourth Proportional to 636,491.69, 954,201.32 and 276,391.61

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Solution

The fourth proportional to 636,491.69, 954,201.32 and 276,391.61 is: 414,354.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,491.69 : 954,201.32 = 276,391.61 : x
  2. Step 2: Convert to fraction form
    636,491.69/954,201.32 = 276,391.61/x
  3. Step 3: Cross multiply
    636,491.69x = 954,201.32 × 276,391.61
  4. Step 4: Simplify right side
    636,491.69x = 263,733,237,716.97
  5. Step 5: Solve for x
    x = 263,733,237,716.97/636,491.69
  6. Step 6: Final answer
    x = 414,354.57

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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.