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Finding the Fourth Proportional to 655,351.13, 904,201.79 and 422,679.61

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Solution

The fourth proportional to 655,351.13, 904,201.79 and 422,679.61 is: 583,179.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,351.13 : 904,201.79 = 422,679.61 : x
  2. Step 2: Convert to fraction form
    655,351.13/904,201.79 = 422,679.61/x
  3. Step 3: Cross multiply
    655,351.13x = 904,201.79 × 422,679.61
  4. Step 4: Simplify right side
    655,351.13x = 382,187,659,958.50
  5. Step 5: Solve for x
    x = 382,187,659,958.50/655,351.13
  6. Step 6: Final answer
    x = 583,179.98

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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.