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Finding the Fourth Proportional to 636,083.48, 876,891.75 and 505,880.48

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Solution

The fourth proportional to 636,083.48, 876,891.75 and 505,880.48 is: 697,396.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,083.48 : 876,891.75 = 505,880.48 : x
  2. Step 2: Convert to fraction form
    636,083.48/876,891.75 = 505,880.48/x
  3. Step 3: Cross multiply
    636,083.48x = 876,891.75 × 505,880.48
  4. Step 4: Simplify right side
    636,083.48x = 443,602,419,398.04
  5. Step 5: Solve for x
    x = 443,602,419,398.04/636,083.48
  6. Step 6: Final answer
    x = 697,396.54

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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.