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Finding the Fourth Proportional to 609,464.25, 840,781.53 and 394,673.58

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Solution

The fourth proportional to 609,464.25, 840,781.53 and 394,673.58 is: 544,468.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,464.25 : 840,781.53 = 394,673.58 : x
  2. Step 2: Convert to fraction form
    609,464.25/840,781.53 = 394,673.58/x
  3. Step 3: Cross multiply
    609,464.25x = 840,781.53 × 394,673.58
  4. Step 4: Simplify right side
    609,464.25x = 331,834,256,442.98
  5. Step 5: Solve for x
    x = 331,834,256,442.98/609,464.25
  6. Step 6: Final answer
    x = 544,468.78

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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.