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Finding the Fourth Proportional to 700,879.31, 967,213.82 and 378,589.40

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Solution

The fourth proportional to 700,879.31, 967,213.82 and 378,589.40 is: 522,453.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,879.31 : 967,213.82 = 378,589.40 : x
  2. Step 2: Convert to fraction form
    700,879.31/967,213.82 = 378,589.40/x
  3. Step 3: Cross multiply
    700,879.31x = 967,213.82 × 378,589.40
  4. Step 4: Simplify right side
    700,879.31x = 366,176,893,056.49
  5. Step 5: Solve for x
    x = 366,176,893,056.49/700,879.31
  6. Step 6: Final answer
    x = 522,453.57

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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.