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Finding the Fourth Proportional to 521,333.62, 780,659.98 and 361,181.43

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Solution

The fourth proportional to 521,333.62, 780,659.98 and 361,181.43 is: 540,843.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,333.62 : 780,659.98 = 361,181.43 : x
  2. Step 2: Convert to fraction form
    521,333.62/780,659.98 = 361,181.43/x
  3. Step 3: Cross multiply
    521,333.62x = 780,659.98 × 361,181.43
  4. Step 4: Simplify right side
    521,333.62x = 281,959,887,017.22
  5. Step 5: Solve for x
    x = 281,959,887,017.22/521,333.62
  6. Step 6: Final answer
    x = 540,843.48

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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.