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Finding the Fourth Proportional to 636,666.11, 878,581.98 and 361,074.54

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Solution

The fourth proportional to 636,666.11, 878,581.98 and 361,074.54 is: 498,273.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,666.11 : 878,581.98 = 361,074.54 : x
  2. Step 2: Convert to fraction form
    636,666.11/878,581.98 = 361,074.54/x
  3. Step 3: Cross multiply
    636,666.11x = 878,581.98 × 361,074.54
  4. Step 4: Simplify right side
    636,666.11x = 317,233,584,280.79
  5. Step 5: Solve for x
    x = 317,233,584,280.79/636,666.11
  6. Step 6: Final answer
    x = 498,273.09

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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.