Home / 816,064.40-1,222,638.60-394,410.80

Finding the Fourth Proportional to 816,064.40, 1,222,638.60 and 394,410.80

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Solution

The fourth proportional to 816,064.40, 1,222,638.60 and 394,410.80 is: 590,911.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,064.40 : 1,222,638.60 = 394,410.80 : x
  2. Step 2: Convert to fraction form
    816,064.40/1,222,638.60 = 394,410.80/x
  3. Step 3: Cross multiply
    816,064.40x = 1,222,638.60 × 394,410.80
  4. Step 4: Simplify right side
    816,064.40x = 482,221,868,336.88
  5. Step 5: Solve for x
    x = 482,221,868,336.88/816,064.40
  6. Step 6: Final answer
    x = 590,911.54

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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.