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Finding the Fourth Proportional to 609,175, 840,544.86 and 394,285.24

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Solution

The fourth proportional to 609,175, 840,544.86 and 394,285.24 is: 544,038.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,175 : 840,544.86 = 394,285.24 : x
  2. Step 2: Convert to fraction form
    609,175/840,544.86 = 394,285.24/x
  3. Step 3: Cross multiply
    609,175x = 840,544.86 × 394,285.24
  4. Step 4: Simplify right side
    609,175x = 331,414,431,855.87
  5. Step 5: Solve for x
    x = 331,414,431,855.87/609,175
  6. Step 6: Final answer
    x = 544,038.14

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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.