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Finding the Fourth Proportional to 631,704.79, 871,751.19 and 359,772.67

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Solution

The fourth proportional to 631,704.79, 871,751.19 and 359,772.67 is: 496,485.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,704.79 : 871,751.19 = 359,772.67 : x
  2. Step 2: Convert to fraction form
    631,704.79/871,751.19 = 359,772.67/x
  3. Step 3: Cross multiply
    631,704.79x = 871,751.19 × 359,772.67
  4. Step 4: Simplify right side
    631,704.79x = 313,632,253,201.98
  5. Step 5: Solve for x
    x = 313,632,253,201.98/631,704.79
  6. Step 6: Final answer
    x = 496,485.48

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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.