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Finding the Fourth Proportional to 7,868,741.76, 11,800,779.84 and 3,379,968

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Solution

The fourth proportional to 7,868,741.76, 11,800,779.84 and 3,379,968 is: 5,068,949.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,868,741.76 : 11,800,779.84 = 3,379,968 : x
  2. Step 2: Convert to fraction form
    7,868,741.76/11,800,779.84 = 3,379,968/x
  3. Step 3: Cross multiply
    7,868,741.76x = 11,800,779.84 × 3,379,968
  4. Step 4: Simplify right side
    7,868,741.76x = 39,886,258,234,245.12
  5. Step 5: Solve for x
    x = 39,886,258,234,245.12/7,868,741.76
  6. Step 6: Final answer
    x = 5,068,949.96

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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.