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Finding the Fourth Proportional to 636,284.74, 878,078.64 and 345,896.85

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Solution

The fourth proportional to 636,284.74, 878,078.64 and 345,896.85 is: 477,340.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,284.74 : 878,078.64 = 345,896.85 : x
  2. Step 2: Convert to fraction form
    636,284.74/878,078.64 = 345,896.85/x
  3. Step 3: Cross multiply
    636,284.74x = 878,078.64 × 345,896.85
  4. Step 4: Simplify right side
    636,284.74x = 303,724,633,898.80
  5. Step 5: Solve for x
    x = 303,724,633,898.80/636,284.74
  6. Step 6: Final answer
    x = 477,340.75

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