Home / 1,215,121.60-1,820,932.80-540,650.80

Finding the Fourth Proportional to 1,215,121.60, 1,820,932.80 and 540,650.80

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Solution

The fourth proportional to 1,215,121.60, 1,820,932.80 and 540,650.80 is: 810,197.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,121.60 : 1,820,932.80 = 540,650.80 : x
  2. Step 2: Convert to fraction form
    1,215,121.60/1,820,932.80 = 540,650.80/x
  3. Step 3: Cross multiply
    1,215,121.60x = 1,820,932.80 × 540,650.80
  4. Step 4: Simplify right side
    1,215,121.60x = 984,488,775,066.24
  5. Step 5: Solve for x
    x = 984,488,775,066.24/1,215,121.60
  6. Step 6: Final answer
    x = 810,197.74

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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.