Home / 5,215,755.20-7,827,520.80-2,690,110.40

Finding the Fourth Proportional to 5,215,755.20, 7,827,520.80 and 2,690,110.40

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Solution

The fourth proportional to 5,215,755.20, 7,827,520.80 and 2,690,110.40 is: 4,037,170.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215,755.20 : 7,827,520.80 = 2,690,110.40 : x
  2. Step 2: Convert to fraction form
    5,215,755.20/7,827,520.80 = 2,690,110.40/x
  3. Step 3: Cross multiply
    5,215,755.20x = 7,827,520.80 × 2,690,110.40
  4. Step 4: Simplify right side
    5,215,755.20x = 21,056,895,110,296.32
  5. Step 5: Solve for x
    x = 21,056,895,110,296.32/5,215,755.20
  6. Step 6: Final answer
    x = 4,037,170.90

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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.