Home / 1,991,917.40-2,987,487.30-662,221.40

Finding the Fourth Proportional to 1,991,917.40, 2,987,487.30 and 662,221.40

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Solution

The fourth proportional to 1,991,917.40, 2,987,487.30 and 662,221.40 is: 993,202.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,917.40 : 2,987,487.30 = 662,221.40 : x
  2. Step 2: Convert to fraction form
    1,991,917.40/2,987,487.30 = 662,221.40/x
  3. Step 3: Cross multiply
    1,991,917.40x = 2,987,487.30 × 662,221.40
  4. Step 4: Simplify right side
    1,991,917.40x = 1,978,378,022,288.22
  5. Step 5: Solve for x
    x = 1,978,378,022,288.22/1,991,917.40
  6. Step 6: Final answer
    x = 993,202.84

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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.