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Finding the Fourth Proportional to 631,741.96, 871,805.46 and 345,265.48

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Solution

The fourth proportional to 631,741.96, 871,805.46 and 345,265.48 is: 476,467.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,741.96 : 871,805.46 = 345,265.48 : x
  2. Step 2: Convert to fraction form
    631,741.96/871,805.46 = 345,265.48/x
  3. Step 3: Cross multiply
    631,741.96x = 871,805.46 × 345,265.48
  4. Step 4: Simplify right side
    631,741.96x = 301,004,330,613.52
  5. Step 5: Solve for x
    x = 301,004,330,613.52/631,741.96
  6. Step 6: Final answer
    x = 476,467.21

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1.5x scale

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.