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Finding the Fourth Proportional to 636,205.17, 877,940.85 and 349,723.20

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Solution

The fourth proportional to 636,205.17, 877,940.85 and 349,723.20 is: 482,605.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,205.17 : 877,940.85 = 349,723.20 : x
  2. Step 2: Convert to fraction form
    636,205.17/877,940.85 = 349,723.20/x
  3. Step 3: Cross multiply
    636,205.17x = 877,940.85 × 349,723.20
  4. Step 4: Simplify right side
    636,205.17x = 307,036,283,472.72
  5. Step 5: Solve for x
    x = 307,036,283,472.72/636,205.17
  6. Step 6: Final answer
    x = 482,605.77

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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.