Home / 3,979,638.72-5,490,342.54-2,449,088.64

Finding the Fourth Proportional to 3,979,638.72, 5,490,342.54 and 2,449,088.64

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Solution

The fourth proportional to 3,979,638.72, 5,490,342.54 and 2,449,088.64 is: 3,378,782.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979,638.72 : 5,490,342.54 = 2,449,088.64 : x
  2. Step 2: Convert to fraction form
    3,979,638.72/5,490,342.54 = 2,449,088.64/x
  3. Step 3: Cross multiply
    3,979,638.72x = 5,490,342.54 × 2,449,088.64
  4. Step 4: Simplify right side
    3,979,638.72x = 13,446,335,544,422.75
  5. Step 5: Solve for x
    x = 13,446,335,544,422.75/3,979,638.72
  6. Step 6: Final answer
    x = 3,378,782.97

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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.