Home / 1,309,998.72-1,807,785.44-729,212.64

Finding the Fourth Proportional to 1,309,998.72, 1,807,785.44 and 729,212.64

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Solution

The fourth proportional to 1,309,998.72, 1,807,785.44 and 729,212.64 is: 1,006,306.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,309,998.72 : 1,807,785.44 = 729,212.64 : x
  2. Step 2: Convert to fraction form
    1,309,998.72/1,807,785.44 = 729,212.64/x
  3. Step 3: Cross multiply
    1,309,998.72x = 1,807,785.44 × 729,212.64
  4. Step 4: Simplify right side
    1,309,998.72x = 1,318,259,993,255.96
  5. Step 5: Solve for x
    x = 1,318,259,993,255.96/1,309,998.72
  6. Step 6: Final answer
    x = 1,006,306.32

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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.