Home / 3,969,920.96-5,478,496.80-2,159,080.64

Finding the Fourth Proportional to 3,969,920.96, 5,478,496.80 and 2,159,080.64

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Solution

The fourth proportional to 3,969,920.96, 5,478,496.80 and 2,159,080.64 is: 2,979,534.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969,920.96 : 5,478,496.80 = 2,159,080.64 : x
  2. Step 2: Convert to fraction form
    3,969,920.96/5,478,496.80 = 2,159,080.64/x
  3. Step 3: Cross multiply
    3,969,920.96x = 5,478,496.80 × 2,159,080.64
  4. Step 4: Simplify right side
    3,969,920.96x = 11,828,516,377,181.95
  5. Step 5: Solve for x
    x = 11,828,516,377,181.95/3,969,920.96
  6. Step 6: Final answer
    x = 2,979,534.48

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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.