Home / 3,138,549.86-4,331,181.39-1,761,893.21

Finding the Fourth Proportional to 3,138,549.86, 4,331,181.39 and 1,761,893.21

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Solution

The fourth proportional to 3,138,549.86, 4,331,181.39 and 1,761,893.21 is: 2,431,402.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138,549.86 : 4,331,181.39 = 1,761,893.21 : x
  2. Step 2: Convert to fraction form
    3,138,549.86/4,331,181.39 = 1,761,893.21/x
  3. Step 3: Cross multiply
    3,138,549.86x = 4,331,181.39 × 1,761,893.21
  4. Step 4: Simplify right side
    3,138,549.86x = 7,631,079,082,319.36
  5. Step 5: Solve for x
    x = 7,631,079,082,319.36/3,138,549.86
  6. Step 6: Final answer
    x = 2,431,402.85

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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.