Home / 2,021,391.70-3,029,465.30-821,917.78

Finding the Fourth Proportional to 2,021,391.70, 3,029,465.30 and 821,917.78

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Solution

The fourth proportional to 2,021,391.70, 3,029,465.30 and 821,917.78 is: 1,231,810.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021,391.70 : 3,029,465.30 = 821,917.78 : x
  2. Step 2: Convert to fraction form
    2,021,391.70/3,029,465.30 = 821,917.78/x
  3. Step 3: Cross multiply
    2,021,391.70x = 3,029,465.30 × 821,917.78
  4. Step 4: Simplify right side
    2,021,391.70x = 2,489,971,393,963.03
  5. Step 5: Solve for x
    x = 2,489,971,393,963.03/2,021,391.70
  6. Step 6: Final answer
    x = 1,231,810.44

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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.