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Finding the Fourth Proportional to 631,172.15, 871,024.50 and 344,700.67

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Solution

The fourth proportional to 631,172.15, 871,024.50 and 344,700.67 is: 475,690.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,172.15 : 871,024.50 = 344,700.67 : x
  2. Step 2: Convert to fraction form
    631,172.15/871,024.50 = 344,700.67/x
  3. Step 3: Cross multiply
    631,172.15x = 871,024.50 × 344,700.67
  4. Step 4: Simplify right side
    631,172.15x = 300,242,728,736.42
  5. Step 5: Solve for x
    x = 300,242,728,736.42/631,172.15
  6. Step 6: Final answer
    x = 475,690.71

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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.