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Finding the Fourth Proportional to 696,003.20, 960,452.16 and 394,179.20

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Solution

The fourth proportional to 696,003.20, 960,452.16 and 394,179.20 is: 543,949.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,003.20 : 960,452.16 = 394,179.20 : x
  2. Step 2: Convert to fraction form
    696,003.20/960,452.16 = 394,179.20/x
  3. Step 3: Cross multiply
    696,003.20x = 960,452.16 × 394,179.20
  4. Step 4: Simplify right side
    696,003.20x = 378,590,264,067.07
  5. Step 5: Solve for x
    x = 378,590,264,067.07/696,003.20
  6. Step 6: Final answer
    x = 543,949.03

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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.