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Finding the Fourth Proportional to 684,992.09, 945,265.86 and 379,081.41

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Solution

The fourth proportional to 684,992.09, 945,265.86 and 379,081.41 is: 523,119.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,992.09 : 945,265.86 = 379,081.41 : x
  2. Step 2: Convert to fraction form
    684,992.09/945,265.86 = 379,081.41/x
  3. Step 3: Cross multiply
    684,992.09x = 945,265.86 × 379,081.41
  4. Step 4: Simplify right side
    684,992.09x = 358,332,715,033.66
  5. Step 5: Solve for x
    x = 358,332,715,033.66/684,992.09
  6. Step 6: Final answer
    x = 523,119.50

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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.