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Finding the Fourth Proportional to 571,494.21, 857,383.86 and 403,342.98

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Solution

The fourth proportional to 571,494.21, 857,383.86 and 403,342.98 is: 605,115.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,494.21 : 857,383.86 = 403,342.98 : x
  2. Step 2: Convert to fraction form
    571,494.21/857,383.86 = 403,342.98/x
  3. Step 3: Cross multiply
    571,494.21x = 857,383.86 × 403,342.98
  4. Step 4: Simplify right side
    571,494.21x = 345,819,761,096.30
  5. Step 5: Solve for x
    x = 345,819,761,096.30/571,494.21
  6. Step 6: Final answer
    x = 605,115.07

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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.