Home / 1,131,115.57-1,560,969.29-621,830.77

Finding the Fourth Proportional to 1,131,115.57, 1,560,969.29 and 621,830.77

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Solution

The fourth proportional to 1,131,115.57, 1,560,969.29 and 621,830.77 is: 858,142.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,115.57 : 1,560,969.29 = 621,830.77 : x
  2. Step 2: Convert to fraction form
    1,131,115.57/1,560,969.29 = 621,830.77/x
  3. Step 3: Cross multiply
    1,131,115.57x = 1,560,969.29 × 621,830.77
  4. Step 4: Simplify right side
    1,131,115.57x = 970,658,735,547.05
  5. Step 5: Solve for x
    x = 970,658,735,547.05/1,131,115.57
  6. Step 6: Final answer
    x = 858,142.85

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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.