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Finding the Fourth Proportional to 631,525.36, 871,494.81 and 345,039.29

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Solution

The fourth proportional to 631,525.36, 871,494.81 and 345,039.29 is: 476,148.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,525.36 : 871,494.81 = 345,039.29 : x
  2. Step 2: Convert to fraction form
    631,525.36/871,494.81 = 345,039.29/x
  3. Step 3: Cross multiply
    631,525.36x = 871,494.81 × 345,039.29
  4. Step 4: Simplify right side
    631,525.36x = 300,699,950,481.09
  5. Step 5: Solve for x
    x = 300,699,950,481.09/631,525.36
  6. Step 6: Final answer
    x = 476,148.65

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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.