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Finding the Fourth Proportional to 8,809,806.40, 13,214,709.60 and 2,826,779.20

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Solution

The fourth proportional to 8,809,806.40, 13,214,709.60 and 2,826,779.20 is: 4,240,168.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,809,806.40 : 13,214,709.60 = 2,826,779.20 : x
  2. Step 2: Convert to fraction form
    8,809,806.40/13,214,709.60 = 2,826,779.20/x
  3. Step 3: Cross multiply
    8,809,806.40x = 13,214,709.60 × 2,826,779.20
  4. Step 4: Simplify right side
    8,809,806.40x = 37,355,066,231,320.32
  5. Step 5: Solve for x
    x = 37,355,066,231,320.32/8,809,806.40
  6. Step 6: Final answer
    x = 4,240,168.80

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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.