Home / 5,120,400.60-7,680,573.18-2,087,754.72

Finding the Fourth Proportional to 5,120,400.60, 7,680,573.18 and 2,087,754.72

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Solution

The fourth proportional to 5,120,400.60, 7,680,573.18 and 2,087,754.72 is: 3,131,620.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120,400.60 : 7,680,573.18 = 2,087,754.72 : x
  2. Step 2: Convert to fraction form
    5,120,400.60/7,680,573.18 = 2,087,754.72/x
  3. Step 3: Cross multiply
    5,120,400.60x = 7,680,573.18 × 2,087,754.72
  4. Step 4: Simplify right side
    5,120,400.60x = 16,035,152,908,850.41
  5. Step 5: Solve for x
    x = 16,035,152,908,850.41/5,120,400.60
  6. Step 6: Final answer
    x = 3,131,620.78

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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.