Home / 772,371.38-1,065,906.20-428,185.41

Finding the Fourth Proportional to 772,371.38, 1,065,906.20 and 428,185.41

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Solution

The fourth proportional to 772,371.38, 1,065,906.20 and 428,185.41 is: 590,914.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,371.38 : 1,065,906.20 = 428,185.41 : x
  2. Step 2: Convert to fraction form
    772,371.38/1,065,906.20 = 428,185.41/x
  3. Step 3: Cross multiply
    772,371.38x = 1,065,906.20 × 428,185.41
  4. Step 4: Simplify right side
    772,371.38x = 456,405,484,339.01
  5. Step 5: Solve for x
    x = 456,405,484,339.01/772,371.38
  6. Step 6: Final answer
    x = 590,914.55

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Half scale
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Double scale
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Similar ratio
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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.