Home / 815,395.14-1,222,169.88-415,190.52

Finding the Fourth Proportional to 815,395.14, 1,222,169.88 and 415,190.52

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Solution

The fourth proportional to 815,395.14, 1,222,169.88 and 415,190.52 is: 622,315.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,395.14 : 1,222,169.88 = 415,190.52 : x
  2. Step 2: Convert to fraction form
    815,395.14/1,222,169.88 = 415,190.52/x
  3. Step 3: Cross multiply
    815,395.14x = 1,222,169.88 × 415,190.52
  4. Step 4: Simplify right side
    815,395.14x = 507,433,348,005.54
  5. Step 5: Solve for x
    x = 507,433,348,005.54/815,395.14
  6. Step 6: Final answer
    x = 622,315.88

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1.5x scale

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.