Home / 1,272,919.20-1,909,378.80-1,099,708.80

Finding the Fourth Proportional to 1,272,919.20, 1,909,378.80 and 1,099,708.80

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Solution

The fourth proportional to 1,272,919.20, 1,909,378.80 and 1,099,708.80 is: 1,649,563.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,919.20 : 1,909,378.80 = 1,099,708.80 : x
  2. Step 2: Convert to fraction form
    1,272,919.20/1,909,378.80 = 1,099,708.80/x
  3. Step 3: Cross multiply
    1,272,919.20x = 1,909,378.80 × 1,099,708.80
  4. Step 4: Simplify right side
    1,272,919.20x = 2,099,760,668,893.44
  5. Step 5: Solve for x
    x = 2,099,760,668,893.44/1,272,919.20
  6. Step 6: Final answer
    x = 1,649,563.20

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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.