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Finding the Fourth Proportional to 663,035.32, 914,989.80 and 376,555.24

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Solution

The fourth proportional to 663,035.32, 914,989.80 and 376,555.24 is: 519,646.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,035.32 : 914,989.80 = 376,555.24 : x
  2. Step 2: Convert to fraction form
    663,035.32/914,989.80 = 376,555.24/x
  3. Step 3: Cross multiply
    663,035.32x = 914,989.80 × 376,555.24
  4. Step 4: Simplify right side
    663,035.32x = 344,544,203,736.55
  5. Step 5: Solve for x
    x = 344,544,203,736.55/663,035.32
  6. Step 6: Final answer
    x = 519,646.83

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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.