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Finding the Fourth Proportional to 438,604.82, 605,374.62 and 285,372.67

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Solution

The fourth proportional to 438,604.82, 605,374.62 and 285,372.67 is: 393,879.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,604.82 : 605,374.62 = 285,372.67 : x
  2. Step 2: Convert to fraction form
    438,604.82/605,374.62 = 285,372.67/x
  3. Step 3: Cross multiply
    438,604.82x = 605,374.62 × 285,372.67
  4. Step 4: Simplify right side
    438,604.82x = 172,757,371,659.64
  5. Step 5: Solve for x
    x = 172,757,371,659.64/438,604.82
  6. Step 6: Final answer
    x = 393,879.33

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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.