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Finding the Fourth Proportional to 455,376.92, 628,824.60 and 283,589.88

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Solution

The fourth proportional to 455,376.92, 628,824.60 and 283,589.88 is: 391,605.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,376.92 : 628,824.60 = 283,589.88 : x
  2. Step 2: Convert to fraction form
    455,376.92/628,824.60 = 283,589.88/x
  3. Step 3: Cross multiply
    455,376.92x = 628,824.60 × 283,589.88
  4. Step 4: Simplify right side
    455,376.92x = 178,328,292,855.05
  5. Step 5: Solve for x
    x = 178,328,292,855.05/455,376.92
  6. Step 6: Final answer
    x = 391,605.91

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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.