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Finding the Fourth Proportional to 663,500.44, 915,550.32 and 376,940.26

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Solution

The fourth proportional to 663,500.44, 915,550.32 and 376,940.26 is: 520,131.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,500.44 : 915,550.32 = 376,940.26 : x
  2. Step 2: Convert to fraction form
    663,500.44/915,550.32 = 376,940.26/x
  3. Step 3: Cross multiply
    663,500.44x = 915,550.32 × 376,940.26
  4. Step 4: Simplify right side
    663,500.44x = 345,107,775,663.88
  5. Step 5: Solve for x
    x = 345,107,775,663.88/663,500.44
  6. Step 6: Final answer
    x = 520,131.95

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1.5x scale

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.