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Finding the Fourth Proportional to 443,376.41, 665,040.01 and 394,021.29

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Solution

The fourth proportional to 443,376.41, 665,040.01 and 394,021.29 is: 591,010.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,376.41 : 665,040.01 = 394,021.29 : x
  2. Step 2: Convert to fraction form
    443,376.41/665,040.01 = 394,021.29/x
  3. Step 3: Cross multiply
    443,376.41x = 665,040.01 × 394,021.29
  4. Step 4: Simplify right side
    443,376.41x = 262,039,921,656.76
  5. Step 5: Solve for x
    x = 262,039,921,656.76/443,376.41
  6. Step 6: Final answer
    x = 591,010.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.