Home / 1,326,912.72-1,989,190.32-517,109.76

Finding the Fourth Proportional to 1,326,912.72, 1,989,190.32 and 517,109.76

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Solution

The fourth proportional to 1,326,912.72, 1,989,190.32 and 517,109.76 is: 775,205.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,912.72 : 1,989,190.32 = 517,109.76 : x
  2. Step 2: Convert to fraction form
    1,326,912.72/1,989,190.32 = 517,109.76/x
  3. Step 3: Cross multiply
    1,326,912.72x = 1,989,190.32 × 517,109.76
  4. Step 4: Simplify right side
    1,326,912.72x = 1,028,629,728,969.52
  5. Step 5: Solve for x
    x = 1,028,629,728,969.52/1,326,912.72
  6. Step 6: Final answer
    x = 775,205.27

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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.