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Finding the Fourth Proportional to 636,825.90, 878,945.23 and 365,076.11

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Solution

The fourth proportional to 636,825.90, 878,945.23 and 365,076.11 is: 503,876.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,825.90 : 878,945.23 = 365,076.11 : x
  2. Step 2: Convert to fraction form
    636,825.90/878,945.23 = 365,076.11/x
  3. Step 3: Cross multiply
    636,825.90x = 878,945.23 × 365,076.11
  4. Step 4: Simplify right side
    636,825.90x = 320,881,906,071.61
  5. Step 5: Solve for x
    x = 320,881,906,071.61/636,825.90
  6. Step 6: Final answer
    x = 503,876.97

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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.