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Finding the Fourth Proportional to 631,710.54, 871,759.13 and 359,778.42

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Solution

The fourth proportional to 631,710.54, 871,759.13 and 359,778.42 is: 496,493.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,710.54 : 871,759.13 = 359,778.42 : x
  2. Step 2: Convert to fraction form
    631,710.54/871,759.13 = 359,778.42/x
  3. Step 3: Cross multiply
    631,710.54x = 871,759.13 × 359,778.42
  4. Step 4: Simplify right side
    631,710.54x = 313,640,120,613.08
  5. Step 5: Solve for x
    x = 313,640,120,613.08/631,710.54
  6. Step 6: Final answer
    x = 496,493.41

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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.