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Finding the Fourth Proportional to 636,310.28, 878,114.09 and 349,832.38

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Solution

The fourth proportional to 636,310.28, 878,114.09 and 349,832.38 is: 482,771.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,310.28 : 878,114.09 = 349,832.38 : x
  2. Step 2: Convert to fraction form
    636,310.28/878,114.09 = 349,832.38/x
  3. Step 3: Cross multiply
    636,310.28x = 878,114.09 × 349,832.38
  4. Step 4: Simplify right side
    636,310.28x = 307,192,742,016.23
  5. Step 5: Solve for x
    x = 307,192,742,016.23/636,310.28
  6. Step 6: Final answer
    x = 482,771.93

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1.5x scale

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.