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Finding the Fourth Proportional to 631,858.86, 871,844.28 and 359,920.80

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Solution

The fourth proportional to 631,858.86, 871,844.28 and 359,920.80 is: 496,621.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,858.86 : 871,844.28 = 359,920.80 : x
  2. Step 2: Convert to fraction form
    631,858.86/871,844.28 = 359,920.80/x
  3. Step 3: Cross multiply
    631,858.86x = 871,844.28 × 359,920.80
  4. Step 4: Simplify right side
    631,858.86x = 313,794,890,733.02
  5. Step 5: Solve for x
    x = 313,794,890,733.02/631,858.86
  6. Step 6: Final answer
    x = 496,621.81

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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.