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Finding the Fourth Proportional to 636,121.53, 877,836.33 and 349,641.54

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Solution

The fourth proportional to 636,121.53, 877,836.33 and 349,641.54 is: 482,499.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,121.53 : 877,836.33 = 349,641.54 : x
  2. Step 2: Convert to fraction form
    636,121.53/877,836.33 = 349,641.54/x
  3. Step 3: Cross multiply
    636,121.53x = 877,836.33 × 349,641.54
  4. Step 4: Simplify right side
    636,121.53x = 306,928,046,289.15
  5. Step 5: Solve for x
    x = 306,928,046,289.15/636,121.53
  6. Step 6: Final answer
    x = 482,499.07

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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.