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Finding the Fourth Proportional to 547,175.12, 821,022.60 and 378,954.32

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Solution

The fourth proportional to 547,175.12, 821,022.60 and 378,954.32 is: 568,611.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,175.12 : 821,022.60 = 378,954.32 : x
  2. Step 2: Convert to fraction form
    547,175.12/821,022.60 = 378,954.32/x
  3. Step 3: Cross multiply
    547,175.12x = 821,022.60 × 378,954.32
  4. Step 4: Simplify right side
    547,175.12x = 311,130,061,087.63
  5. Step 5: Solve for x
    x = 311,130,061,087.63/547,175.12
  6. Step 6: Final answer
    x = 568,611.49

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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.