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Finding the Fourth Proportional to 631,170.90, 871,022.77 and 344,699.42

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Solution

The fourth proportional to 631,170.90, 871,022.77 and 344,699.42 is: 475,688.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,170.90 : 871,022.77 = 344,699.42 : x
  2. Step 2: Convert to fraction form
    631,170.90/871,022.77 = 344,699.42/x
  3. Step 3: Cross multiply
    631,170.90x = 871,022.77 × 344,699.42
  4. Step 4: Simplify right side
    631,170.90x = 300,241,038,408.93
  5. Step 5: Solve for x
    x = 300,241,038,408.93/631,170.90
  6. Step 6: Final answer
    x = 475,688.97

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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.