Home / 3,120,400.80-4,680,601.20-756,496.80

Finding the Fourth Proportional to 3,120,400.80, 4,680,601.20 and 756,496.80

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Solution

The fourth proportional to 3,120,400.80, 4,680,601.20 and 756,496.80 is: 1,134,745.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120,400.80 : 4,680,601.20 = 756,496.80 : x
  2. Step 2: Convert to fraction form
    3,120,400.80/4,680,601.20 = 756,496.80/x
  3. Step 3: Cross multiply
    3,120,400.80x = 4,680,601.20 × 756,496.80
  4. Step 4: Simplify right side
    3,120,400.80x = 3,540,859,829,876.16
  5. Step 5: Solve for x
    x = 3,540,859,829,876.16/3,120,400.80
  6. Step 6: Final answer
    x = 1,134,745.20

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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.