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Finding the Fourth Proportional to 636,548.82, 878,419.86 and 350,068.92

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Solution

The fourth proportional to 636,548.82, 878,419.86 and 350,068.92 is: 483,085.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,548.82 : 878,419.86 = 350,068.92 : x
  2. Step 2: Convert to fraction form
    636,548.82/878,419.86 = 350,068.92/x
  3. Step 3: Cross multiply
    636,548.82x = 878,419.86 × 350,068.92
  4. Step 4: Simplify right side
    636,548.82x = 307,507,491,696.75
  5. Step 5: Solve for x
    x = 307,507,491,696.75/636,548.82
  6. Step 6: Final answer
    x = 483,085.48

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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.