Home / 7,978,819.20-11,964,729.60-3,184,915.20

Finding the Fourth Proportional to 7,978,819.20, 11,964,729.60 and 3,184,915.20

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Solution

The fourth proportional to 7,978,819.20, 11,964,729.60 and 3,184,915.20 is: 4,775,976.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,978,819.20 : 11,964,729.60 = 3,184,915.20 : x
  2. Step 2: Convert to fraction form
    7,978,819.20/11,964,729.60 = 3,184,915.20/x
  3. Step 3: Cross multiply
    7,978,819.20x = 11,964,729.60 × 3,184,915.20
  4. Step 4: Simplify right side
    7,978,819.20x = 38,106,649,166,929.92
  5. Step 5: Solve for x
    x = 38,106,649,166,929.92/7,978,819.20
  6. Step 6: Final answer
    x = 4,775,976.02

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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.