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Finding the Fourth Proportional to 631,169.15, 871,020.36 and 344,697.67

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Solution

The fourth proportional to 631,169.15, 871,020.36 and 344,697.67 is: 475,686.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,169.15 : 871,020.36 = 344,697.67 : x
  2. Step 2: Convert to fraction form
    631,169.15/871,020.36 = 344,697.67/x
  3. Step 3: Cross multiply
    631,169.15x = 871,020.36 × 344,697.67
  4. Step 4: Simplify right side
    631,169.15x = 300,238,684,259.46
  5. Step 5: Solve for x
    x = 300,238,684,259.46/631,169.15
  6. Step 6: Final answer
    x = 475,686.56

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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.