Home / 1,120,438.52-1,680,427.22-321,542

Finding the Fourth Proportional to 1,120,438.52, 1,680,427.22 and 321,542

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Solution

The fourth proportional to 1,120,438.52, 1,680,427.22 and 321,542 is: 482,246.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,438.52 : 1,680,427.22 = 321,542 : x
  2. Step 2: Convert to fraction form
    1,120,438.52/1,680,427.22 = 321,542/x
  3. Step 3: Cross multiply
    1,120,438.52x = 1,680,427.22 × 321,542
  4. Step 4: Simplify right side
    1,120,438.52x = 540,327,929,173.24
  5. Step 5: Solve for x
    x = 540,327,929,173.24/1,120,438.52
  6. Step 6: Final answer
    x = 482,246.83

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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.