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Finding the Fourth Proportional to 631,525.68, 871,495.14 and 345,039.60

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Solution

The fourth proportional to 631,525.68, 871,495.14 and 345,039.60 is: 476,149.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,525.68 : 871,495.14 = 345,039.60 : x
  2. Step 2: Convert to fraction form
    631,525.68/871,495.14 = 345,039.60/x
  3. Step 3: Cross multiply
    631,525.68x = 871,495.14 × 345,039.60
  4. Step 4: Simplify right side
    631,525.68x = 300,700,334,507.54
  5. Step 5: Solve for x
    x = 300,700,334,507.54/631,525.68
  6. Step 6: Final answer
    x = 476,149.02

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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.