Home / 815,040.36-1,222,555.68-443,425.32

Finding the Fourth Proportional to 815,040.36, 1,222,555.68 and 443,425.32

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Solution

The fourth proportional to 815,040.36, 1,222,555.68 and 443,425.32 is: 665,135.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,040.36 : 1,222,555.68 = 443,425.32 : x
  2. Step 2: Convert to fraction form
    815,040.36/1,222,555.68 = 443,425.32/x
  3. Step 3: Cross multiply
    815,040.36x = 1,222,555.68 × 443,425.32
  4. Step 4: Simplify right side
    815,040.36x = 542,112,143,621.82
  5. Step 5: Solve for x
    x = 542,112,143,621.82/815,040.36
  6. Step 6: Final answer
    x = 665,135.34

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Double scale
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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.