Home / 1,315,043.10-1,972,629.45-685,187.10

Finding the Fourth Proportional to 1,315,043.10, 1,972,629.45 and 685,187.10

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Solution

The fourth proportional to 1,315,043.10, 1,972,629.45 and 685,187.10 is: 1,027,814.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,043.10 : 1,972,629.45 = 685,187.10 : x
  2. Step 2: Convert to fraction form
    1,315,043.10/1,972,629.45 = 685,187.10/x
  3. Step 3: Cross multiply
    1,315,043.10x = 1,972,629.45 × 685,187.10
  4. Step 4: Simplify right side
    1,315,043.10x = 1,351,620,252,220.10
  5. Step 5: Solve for x
    x = 1,351,620,252,220.10/1,315,043.10
  6. Step 6: Final answer
    x = 1,027,814.41

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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.