Home / 1,028,745.86-1,420,161.56-685,153.58

Finding the Fourth Proportional to 1,028,745.86, 1,420,161.56 and 685,153.58

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Solution

The fourth proportional to 1,028,745.86, 1,420,161.56 and 685,153.58 is: 945,839.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,028,745.86 : 1,420,161.56 = 685,153.58 : x
  2. Step 2: Convert to fraction form
    1,028,745.86/1,420,161.56 = 685,153.58/x
  3. Step 3: Cross multiply
    1,028,745.86x = 1,420,161.56 × 685,153.58
  4. Step 4: Simplify right side
    1,028,745.86x = 973,028,766,485.81
  5. Step 5: Solve for x
    x = 973,028,766,485.81/1,028,745.86
  6. Step 6: Final answer
    x = 945,839.79

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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.