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Finding the Fourth Proportional to 678,816, 936,785.52 and 377,029.44

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Solution

The fourth proportional to 678,816, 936,785.52 and 377,029.44 is: 520,311.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,816 : 936,785.52 = 377,029.44 : x
  2. Step 2: Convert to fraction form
    678,816/936,785.52 = 377,029.44/x
  3. Step 3: Cross multiply
    678,816x = 936,785.52 × 377,029.44
  4. Step 4: Simplify right side
    678,816x = 353,195,720,005.71
  5. Step 5: Solve for x
    x = 353,195,720,005.71/678,816
  6. Step 6: Final answer
    x = 520,311.42

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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.