Home / 1,991,199.76-2,987,760.76-979,773.20

Finding the Fourth Proportional to 1,991,199.76, 2,987,760.76 and 979,773.20

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Solution

The fourth proportional to 1,991,199.76, 2,987,760.76 and 979,773.20 is: 1,470,132.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,199.76 : 2,987,760.76 = 979,773.20 : x
  2. Step 2: Convert to fraction form
    1,991,199.76/2,987,760.76 = 979,773.20/x
  3. Step 3: Cross multiply
    1,991,199.76x = 2,987,760.76 × 979,773.20
  4. Step 4: Simplify right side
    1,991,199.76x = 2,927,327,920,659.63
  5. Step 5: Solve for x
    x = 2,927,327,920,659.63/1,991,199.76
  6. Step 6: Final answer
    x = 1,470,132.72

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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.