Home / 438,211.54-657,589.47-280,553.14

Finding the Fourth Proportional to 438,211.54, 657,589.47 and 280,553.14

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Solution

The fourth proportional to 438,211.54, 657,589.47 and 280,553.14 is: 421,003.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,211.54 : 657,589.47 = 280,553.14 : x
  2. Step 2: Convert to fraction form
    438,211.54/657,589.47 = 280,553.14/x
  3. Step 3: Cross multiply
    438,211.54x = 657,589.47 × 280,553.14
  4. Step 4: Simplify right side
    438,211.54x = 184,488,790,639.44
  5. Step 5: Solve for x
    x = 184,488,790,639.44/438,211.54
  6. Step 6: Final answer
    x = 421,003.95

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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.