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Finding the Fourth Proportional to 700,755.72, 967,042.82 and 378,465.88

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Solution

The fourth proportional to 700,755.72, 967,042.82 and 378,465.88 is: 522,282.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,755.72 : 967,042.82 = 378,465.88 : x
  2. Step 2: Convert to fraction form
    700,755.72/967,042.82 = 378,465.88/x
  3. Step 3: Cross multiply
    700,755.72x = 967,042.82 × 378,465.88
  4. Step 4: Simplify right side
    700,755.72x = 365,992,711,868.98
  5. Step 5: Solve for x
    x = 365,992,711,868.98/700,755.72
  6. Step 6: Final answer
    x = 522,282.87

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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.