Home / 3,280,078.80-4,920,809.40-1,385,845.20

Finding the Fourth Proportional to 3,280,078.80, 4,920,809.40 and 1,385,845.20

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Solution

The fourth proportional to 3,280,078.80, 4,920,809.40 and 1,385,845.20 is: 2,079,059.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280,078.80 : 4,920,809.40 = 1,385,845.20 : x
  2. Step 2: Convert to fraction form
    3,280,078.80/4,920,809.40 = 1,385,845.20/x
  3. Step 3: Cross multiply
    3,280,078.80x = 4,920,809.40 × 1,385,845.20
  4. Step 4: Simplify right side
    3,280,078.80x = 6,819,480,087,104.88
  5. Step 5: Solve for x
    x = 6,819,480,087,104.88/3,280,078.80
  6. Step 6: Final answer
    x = 2,079,059.83

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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.