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Finding the Fourth Proportional to 662,868.82, 993,531.86 and 378,758.39

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Solution

The fourth proportional to 662,868.82, 993,531.86 and 378,758.39 is: 567,696.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,868.82 : 993,531.86 = 378,758.39 : x
  2. Step 2: Convert to fraction form
    662,868.82/993,531.86 = 378,758.39/x
  3. Step 3: Cross multiply
    662,868.82x = 993,531.86 × 378,758.39
  4. Step 4: Simplify right side
    662,868.82x = 376,308,520,845.85
  5. Step 5: Solve for x
    x = 376,308,520,845.85/662,868.82
  6. Step 6: Final answer
    x = 567,696.82

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1.5x scale

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.