Home / 1,200,014.40-1,800,021.60-752,116.80

Finding the Fourth Proportional to 1,200,014.40, 1,800,021.60 and 752,116.80

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Solution

The fourth proportional to 1,200,014.40, 1,800,021.60 and 752,116.80 is: 1,128,175.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200,014.40 : 1,800,021.60 = 752,116.80 : x
  2. Step 2: Convert to fraction form
    1,200,014.40/1,800,021.60 = 752,116.80/x
  3. Step 3: Cross multiply
    1,200,014.40x = 1,800,021.60 × 752,116.80
  4. Step 4: Simplify right side
    1,200,014.40x = 1,353,826,485,722.88
  5. Step 5: Solve for x
    x = 1,353,826,485,722.88/1,200,014.40
  6. Step 6: Final answer
    x = 1,128,175.20

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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.