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Finding the Fourth Proportional to 636,665.36, 878,580.95 and 361,073.79

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Solution

The fourth proportional to 636,665.36, 878,580.95 and 361,073.79 is: 498,272.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,665.36 : 878,580.95 = 361,073.79 : x
  2. Step 2: Convert to fraction form
    636,665.36/878,580.95 = 361,073.79/x
  3. Step 3: Cross multiply
    636,665.36x = 878,580.95 × 361,073.79
  4. Step 4: Simplify right side
    636,665.36x = 317,232,551,632.93
  5. Step 5: Solve for x
    x = 317,232,551,632.93/636,665.36
  6. Step 6: Final answer
    x = 498,272.05

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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.