Home / 1,991,921.40-2,987,493.30-662,225.40

Finding the Fourth Proportional to 1,991,921.40, 2,987,493.30 and 662,225.40

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Solution

The fourth proportional to 1,991,921.40, 2,987,493.30 and 662,225.40 is: 993,208.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,921.40 : 2,987,493.30 = 662,225.40 : x
  2. Step 2: Convert to fraction form
    1,991,921.40/2,987,493.30 = 662,225.40/x
  3. Step 3: Cross multiply
    1,991,921.40x = 2,987,493.30 × 662,225.40
  4. Step 4: Simplify right side
    1,991,921.40x = 1,978,393,945,589.82
  5. Step 5: Solve for x
    x = 1,978,393,945,589.82/1,991,921.40
  6. Step 6: Final answer
    x = 993,208.84

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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.