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Finding the Fourth Proportional to 2,865,781.60, 4,308,003.60 and 2,030,120.80

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Solution

The fourth proportional to 2,865,781.60, 4,308,003.60 and 2,030,120.80 is: 3,051,791.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,865,781.60 : 4,308,003.60 = 2,030,120.80 : x
  2. Step 2: Convert to fraction form
    2,865,781.60/4,308,003.60 = 2,030,120.80/x
  3. Step 3: Cross multiply
    2,865,781.60x = 4,308,003.60 × 2,030,120.80
  4. Step 4: Simplify right side
    2,865,781.60x = 8,745,767,714,834.88
  5. Step 5: Solve for x
    x = 8,745,767,714,834.88/2,865,781.60
  6. Step 6: Final answer
    x = 3,051,791.43

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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.