Home / 1,131,209.73-1,561,097.21-621,913.05

Finding the Fourth Proportional to 1,131,209.73, 1,561,097.21 and 621,913.05

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Solution

The fourth proportional to 1,131,209.73, 1,561,097.21 and 621,913.05 is: 858,255.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,209.73 : 1,561,097.21 = 621,913.05 : x
  2. Step 2: Convert to fraction form
    1,131,209.73/1,561,097.21 = 621,913.05/x
  3. Step 3: Cross multiply
    1,131,209.73x = 1,561,097.21 × 621,913.05
  4. Step 4: Simplify right side
    1,131,209.73x = 970,866,724,108.03
  5. Step 5: Solve for x
    x = 970,866,724,108.03/1,131,209.73
  6. Step 6: Final answer
    x = 858,255.28

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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.