Home / 1,120,451.54-1,680,688.85-321,731.19

Finding the Fourth Proportional to 1,120,451.54, 1,680,688.85 and 321,731.19

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Solution

The fourth proportional to 1,120,451.54, 1,680,688.85 and 321,731.19 is: 482,600.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,451.54 : 1,680,688.85 = 321,731.19 : x
  2. Step 2: Convert to fraction form
    1,120,451.54/1,680,688.85 = 321,731.19/x
  3. Step 3: Cross multiply
    1,120,451.54x = 1,680,688.85 × 321,731.19
  4. Step 4: Simplify right side
    1,120,451.54x = 540,730,022,121.58
  5. Step 5: Solve for x
    x = 540,730,022,121.58/1,120,451.54
  6. Step 6: Final answer
    x = 482,600.10

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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.