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Finding the Fourth Proportional to 609,462.05, 840,778.43 and 394,671.29

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Solution

The fourth proportional to 609,462.05, 840,778.43 and 394,671.29 is: 544,465.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,462.05 : 840,778.43 = 394,671.29 : x
  2. Step 2: Convert to fraction form
    609,462.05/840,778.43 = 394,671.29/x
  3. Step 3: Cross multiply
    609,462.05x = 840,778.43 × 394,671.29
  4. Step 4: Simplify right side
    609,462.05x = 331,831,101,395.03
  5. Step 5: Solve for x
    x = 331,831,101,395.03/609,462.05
  6. Step 6: Final answer
    x = 544,465.57

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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.