Home / 1,942,021.92-2,678,739.30-1,288,633.80

Finding the Fourth Proportional to 1,942,021.92, 2,678,739.30 and 1,288,633.80

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Solution

The fourth proportional to 1,942,021.92, 2,678,739.30 and 1,288,633.80 is: 1,777,484.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942,021.92 : 2,678,739.30 = 1,288,633.80 : x
  2. Step 2: Convert to fraction form
    1,942,021.92/2,678,739.30 = 1,288,633.80/x
  3. Step 3: Cross multiply
    1,942,021.92x = 2,678,739.30 × 1,288,633.80
  4. Step 4: Simplify right side
    1,942,021.92x = 3,451,914,003,368.34
  5. Step 5: Solve for x
    x = 3,451,914,003,368.34/1,942,021.92
  6. Step 6: Final answer
    x = 1,777,484.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.