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Finding the Fourth Proportional to 636,293.63, 878,091.15 and 349,815.75

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Solution

The fourth proportional to 636,293.63, 878,091.15 and 349,815.75 is: 482,749.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,293.63 : 878,091.15 = 349,815.75 : x
  2. Step 2: Convert to fraction form
    636,293.63/878,091.15 = 349,815.75/x
  3. Step 3: Cross multiply
    636,293.63x = 878,091.15 × 349,815.75
  4. Step 4: Simplify right side
    636,293.63x = 307,170,114,205.61
  5. Step 5: Solve for x
    x = 307,170,114,205.61/636,293.63
  6. Step 6: Final answer
    x = 482,749.00

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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.