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Finding the Fourth Proportional to 631,825.11, 871,917.39 and 359,892.90

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Solution

The fourth proportional to 631,825.11, 871,917.39 and 359,892.90 is: 496,651.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,825.11 : 871,917.39 = 359,892.90 : x
  2. Step 2: Convert to fraction form
    631,825.11/871,917.39 = 359,892.90/x
  3. Step 3: Cross multiply
    631,825.11x = 871,917.39 × 359,892.90
  4. Step 4: Simplify right side
    631,825.11x = 313,796,878,047.53
  5. Step 5: Solve for x
    x = 313,796,878,047.53/631,825.11
  6. Step 6: Final answer
    x = 496,651.48

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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.