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Finding the Fourth Proportional to 631,506.08, 871,452.48 and 345,036

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Solution

The fourth proportional to 631,506.08, 871,452.48 and 345,036 is: 476,135.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,506.08 : 871,452.48 = 345,036 : x
  2. Step 2: Convert to fraction form
    631,506.08/871,452.48 = 345,036/x
  3. Step 3: Cross multiply
    631,506.08x = 871,452.48 × 345,036
  4. Step 4: Simplify right side
    631,506.08x = 300,682,477,889.28
  5. Step 5: Solve for x
    x = 300,682,477,889.28/631,506.08
  6. Step 6: Final answer
    x = 476,135.52

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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.