Home / 1,121,856.40-1,682,787.30-447,992.56

Finding the Fourth Proportional to 1,121,856.40, 1,682,787.30 and 447,992.56

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Solution

The fourth proportional to 1,121,856.40, 1,682,787.30 and 447,992.56 is: 671,989.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,856.40 : 1,682,787.30 = 447,992.56 : x
  2. Step 2: Convert to fraction form
    1,121,856.40/1,682,787.30 = 447,992.56/x
  3. Step 3: Cross multiply
    1,121,856.40x = 1,682,787.30 × 447,992.56
  4. Step 4: Simplify right side
    1,121,856.40x = 753,876,190,462.49
  5. Step 5: Solve for x
    x = 753,876,190,462.49/1,121,856.40
  6. Step 6: Final answer
    x = 671,989.92

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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.