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Finding the Fourth Proportional to 636,867.96, 878,891.40 and 350,388.87

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Solution

The fourth proportional to 636,867.96, 878,891.40 and 350,388.87 is: 483,544.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,867.96 : 878,891.40 = 350,388.87 : x
  2. Step 2: Convert to fraction form
    636,867.96/878,891.40 = 350,388.87/x
  3. Step 3: Cross multiply
    636,867.96x = 878,891.40 × 350,388.87
  4. Step 4: Simplify right side
    636,867.96x = 307,953,764,498.72
  5. Step 5: Solve for x
    x = 307,953,764,498.72/636,867.96
  6. Step 6: Final answer
    x = 483,544.13

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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.