Home / 1,315,003.60-1,972,570.20-685,147.60

Finding the Fourth Proportional to 1,315,003.60, 1,972,570.20 and 685,147.60

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Solution

The fourth proportional to 1,315,003.60, 1,972,570.20 and 685,147.60 is: 1,027,755.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,003.60 : 1,972,570.20 = 685,147.60 : x
  2. Step 2: Convert to fraction form
    1,315,003.60/1,972,570.20 = 685,147.60/x
  3. Step 3: Cross multiply
    1,315,003.60x = 1,972,570.20 × 685,147.60
  4. Step 4: Simplify right side
    1,315,003.60x = 1,351,501,738,361.52
  5. Step 5: Solve for x
    x = 1,351,501,738,361.52/1,315,003.60
  6. Step 6: Final answer
    x = 1,027,755.16

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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.