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Finding the Fourth Proportional to 575,201.20, 863,676.60 and 442,231.60

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Solution

The fourth proportional to 575,201.20, 863,676.60 and 442,231.60 is: 664,019.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,201.20 : 863,676.60 = 442,231.60 : x
  2. Step 2: Convert to fraction form
    575,201.20/863,676.60 = 442,231.60/x
  3. Step 3: Cross multiply
    575,201.20x = 863,676.60 × 442,231.60
  4. Step 4: Simplify right side
    575,201.20x = 381,945,084,700.56
  5. Step 5: Solve for x
    x = 381,945,084,700.56/575,201.20
  6. Step 6: Final answer
    x = 664,019.97

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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.