Home / 2,120,108.64-3,181,213.77-840,688.68

Finding the Fourth Proportional to 2,120,108.64, 3,181,213.77 and 840,688.68

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Solution

The fourth proportional to 2,120,108.64, 3,181,213.77 and 840,688.68 is: 1,261,449.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120,108.64 : 3,181,213.77 = 840,688.68 : x
  2. Step 2: Convert to fraction form
    2,120,108.64/3,181,213.77 = 840,688.68/x
  3. Step 3: Cross multiply
    2,120,108.64x = 3,181,213.77 × 840,688.68
  4. Step 4: Simplify right side
    2,120,108.64x = 2,674,410,405,099.12
  5. Step 5: Solve for x
    x = 2,674,410,405,099.12/2,120,108.64
  6. Step 6: Final answer
    x = 1,261,449.70

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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.