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Finding the Fourth Proportional to 636,197.92, 877,930.86 and 349,715.95

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Solution

The fourth proportional to 636,197.92, 877,930.86 and 349,715.95 is: 482,595.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,197.92 : 877,930.86 = 349,715.95 : x
  2. Step 2: Convert to fraction form
    636,197.92/877,930.86 = 349,715.95/x
  3. Step 3: Cross multiply
    636,197.92x = 877,930.86 × 349,715.95
  4. Step 4: Simplify right side
    636,197.92x = 307,026,424,739.22
  5. Step 5: Solve for x
    x = 307,026,424,739.22/636,197.92
  6. Step 6: Final answer
    x = 482,595.77

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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.