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Finding the Fourth Proportional to 631,576.89, 871,576.34 and 341,188.56

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Solution

The fourth proportional to 631,576.89, 871,576.34 and 341,188.56 is: 470,840.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,576.89 : 871,576.34 = 341,188.56 : x
  2. Step 2: Convert to fraction form
    631,576.89/871,576.34 = 341,188.56/x
  3. Step 3: Cross multiply
    631,576.89x = 871,576.34 × 341,188.56
  4. Step 4: Simplify right side
    631,576.89x = 297,371,874,668.73
  5. Step 5: Solve for x
    x = 297,371,874,668.73/631,576.89
  6. Step 6: Final answer
    x = 470,840.34

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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.