Home / 3,979,478.72-5,490,121.74-2,448,928.64

Finding the Fourth Proportional to 3,979,478.72, 5,490,121.74 and 2,448,928.64

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Solution

The fourth proportional to 3,979,478.72, 5,490,121.74 and 2,448,928.64 is: 3,378,562.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979,478.72 : 5,490,121.74 = 2,448,928.64 : x
  2. Step 2: Convert to fraction form
    3,979,478.72/5,490,121.74 = 2,448,928.64/x
  3. Step 3: Cross multiply
    3,979,478.72x = 5,490,121.74 × 2,448,928.64
  4. Step 4: Simplify right side
    3,979,478.72x = 13,444,916,366,172.63
  5. Step 5: Solve for x
    x = 13,444,916,366,172.63/3,979,478.72
  6. Step 6: Final answer
    x = 3,378,562.20

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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.