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Finding the Fourth Proportional to 571,512.20, 857,410.88 and 403,361.01

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Solution

The fourth proportional to 571,512.20, 857,410.88 and 403,361.01 is: 605,142.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,512.20 : 857,410.88 = 403,361.01 : x
  2. Step 2: Convert to fraction form
    571,512.20/857,410.88 = 403,361.01/x
  3. Step 3: Cross multiply
    571,512.20x = 857,410.88 × 403,361.01
  4. Step 4: Simplify right side
    571,512.20x = 345,846,116,524.98
  5. Step 5: Solve for x
    x = 345,846,116,524.98/571,512.20
  6. Step 6: Final answer
    x = 605,142.15

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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.