Home / 1,969,114.80-2,953,672.20-639,418.80

Finding the Fourth Proportional to 1,969,114.80, 2,953,672.20 and 639,418.80

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Solution

The fourth proportional to 1,969,114.80, 2,953,672.20 and 639,418.80 is: 959,128.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,969,114.80 : 2,953,672.20 = 639,418.80 : x
  2. Step 2: Convert to fraction form
    1,969,114.80/2,953,672.20 = 639,418.80/x
  3. Step 3: Cross multiply
    1,969,114.80x = 2,953,672.20 × 639,418.80
  4. Step 4: Simplify right side
    1,969,114.80x = 1,888,633,533,717.36
  5. Step 5: Solve for x
    x = 1,888,633,533,717.36/1,969,114.80
  6. Step 6: Final answer
    x = 959,128.20

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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.