Home / 1,272,857.70-1,909,286.55-1,099,647.30

Finding the Fourth Proportional to 1,272,857.70, 1,909,286.55 and 1,099,647.30

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Solution

The fourth proportional to 1,272,857.70, 1,909,286.55 and 1,099,647.30 is: 1,649,470.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,857.70 : 1,909,286.55 = 1,099,647.30 : x
  2. Step 2: Convert to fraction form
    1,272,857.70/1,909,286.55 = 1,099,647.30/x
  3. Step 3: Cross multiply
    1,272,857.70x = 1,909,286.55 × 1,099,647.30
  4. Step 4: Simplify right side
    1,272,857.70x = 2,099,541,799,633.82
  5. Step 5: Solve for x
    x = 2,099,541,799,633.82/1,272,857.70
  6. Step 6: Final answer
    x = 1,649,470.95

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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.