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Finding the Fourth Proportional to 663,295.55, 994,934.06 and 378,378.05

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Solution

The fourth proportional to 663,295.55, 994,934.06 and 378,378.05 is: 567,561.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,295.55 : 994,934.06 = 378,378.05 : x
  2. Step 2: Convert to fraction form
    663,295.55/994,934.06 = 378,378.05/x
  3. Step 3: Cross multiply
    663,295.55x = 994,934.06 × 378,378.05
  4. Step 4: Simplify right side
    663,295.55x = 376,461,202,634.82
  5. Step 5: Solve for x
    x = 376,461,202,634.82/663,295.55
  6. Step 6: Final answer
    x = 567,561.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.