Home / 3,939,061.20-5,908,591.80-1,279,669.20

Finding the Fourth Proportional to 3,939,061.20, 5,908,591.80 and 1,279,669.20

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Solution

The fourth proportional to 3,939,061.20, 5,908,591.80 and 1,279,669.20 is: 1,919,503.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939,061.20 : 5,908,591.80 = 1,279,669.20 : x
  2. Step 2: Convert to fraction form
    3,939,061.20/5,908,591.80 = 1,279,669.20/x
  3. Step 3: Cross multiply
    3,939,061.20x = 5,908,591.80 × 1,279,669.20
  4. Step 4: Simplify right side
    3,939,061.20x = 7,561,042,941,832.56
  5. Step 5: Solve for x
    x = 7,561,042,941,832.56/3,939,061.20
  6. Step 6: Final answer
    x = 1,919,503.80

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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.