Home / 2,979,309-4,111,446.42-1,621,191.72

Finding the Fourth Proportional to 2,979,309, 4,111,446.42 and 1,621,191.72

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Solution

The fourth proportional to 2,979,309, 4,111,446.42 and 1,621,191.72 is: 2,237,244.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979,309 : 4,111,446.42 = 1,621,191.72 : x
  2. Step 2: Convert to fraction form
    2,979,309/4,111,446.42 = 1,621,191.72/x
  3. Step 3: Cross multiply
    2,979,309x = 4,111,446.42 × 1,621,191.72
  4. Step 4: Simplify right side
    2,979,309x = 6,665,442,893,327.64
  5. Step 5: Solve for x
    x = 6,665,442,893,327.64/2,979,309
  6. Step 6: Final answer
    x = 2,237,244.57

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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.