Home / 3,149,740-4,347,984.78-2,117,845.90

Finding the Fourth Proportional to 3,149,740, 4,347,984.78 and 2,117,845.90

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Solution

The fourth proportional to 3,149,740, 4,347,984.78 and 2,117,845.90 is: 2,923,530.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,149,740 : 4,347,984.78 = 2,117,845.90 : x
  2. Step 2: Convert to fraction form
    3,149,740/4,347,984.78 = 2,117,845.90/x
  3. Step 3: Cross multiply
    3,149,740x = 4,347,984.78 × 2,117,845.90
  4. Step 4: Simplify right side
    3,149,740x = 9,208,361,739,585.40
  5. Step 5: Solve for x
    x = 9,208,361,739,585.40/3,149,740
  6. Step 6: Final answer
    x = 2,923,530.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.