Home / 1,203,974.72-1,661,421.62-687,627.11

Finding the Fourth Proportional to 1,203,974.72, 1,661,421.62 and 687,627.11

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Solution

The fourth proportional to 1,203,974.72, 1,661,421.62 and 687,627.11 is: 948,889.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203,974.72 : 1,661,421.62 = 687,627.11 : x
  2. Step 2: Convert to fraction form
    1,203,974.72/1,661,421.62 = 687,627.11/x
  3. Step 3: Cross multiply
    1,203,974.72x = 1,661,421.62 × 687,627.11
  4. Step 4: Simplify right side
    1,203,974.72x = 1,142,438,540,464.08
  5. Step 5: Solve for x
    x = 1,142,438,540,464.08/1,203,974.72
  6. Step 6: Final answer
    x = 948,889.14

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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.