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Finding the Fourth Proportional to 561,128.44, 774,357.24 and 306,480.23

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Solution

The fourth proportional to 561,128.44, 774,357.24 and 306,480.23 is: 422,942.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,128.44 : 774,357.24 = 306,480.23 : x
  2. Step 2: Convert to fraction form
    561,128.44/774,357.24 = 306,480.23/x
  3. Step 3: Cross multiply
    561,128.44x = 774,357.24 × 306,480.23
  4. Step 4: Simplify right side
    561,128.44x = 237,325,185,017.37
  5. Step 5: Solve for x
    x = 237,325,185,017.37/561,128.44
  6. Step 6: Final answer
    x = 422,942.71

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1.5x scale

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.