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Finding the Fourth Proportional to 636,205.19, 877,940.87 and 349,723.20

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Solution

The fourth proportional to 636,205.19, 877,940.87 and 349,723.20 is: 482,605.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,205.19 : 877,940.87 = 349,723.20 : x
  2. Step 2: Convert to fraction form
    636,205.19/877,940.87 = 349,723.20/x
  3. Step 3: Cross multiply
    636,205.19x = 877,940.87 × 349,723.20
  4. Step 4: Simplify right side
    636,205.19x = 307,036,288,718.57
  5. Step 5: Solve for x
    x = 307,036,288,718.57/636,205.19
  6. Step 6: Final answer
    x = 482,605.76

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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.