Home / 2,187,322.72-3,280,964.40-691,415.20

Finding the Fourth Proportional to 2,187,322.72, 3,280,964.40 and 691,415.20

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Solution

The fourth proportional to 2,187,322.72, 3,280,964.40 and 691,415.20 is: 1,037,116.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187,322.72 : 3,280,964.40 = 691,415.20 : x
  2. Step 2: Convert to fraction form
    2,187,322.72/3,280,964.40 = 691,415.20/x
  3. Step 3: Cross multiply
    2,187,322.72x = 3,280,964.40 × 691,415.20
  4. Step 4: Simplify right side
    2,187,322.72x = 2,268,508,656,818.88
  5. Step 5: Solve for x
    x = 2,268,508,656,818.88/2,187,322.72
  6. Step 6: Final answer
    x = 1,037,116.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.