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Finding the Fourth Proportional to 399,020.25, 594,185 and 394,602.51

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Solution

The fourth proportional to 399,020.25, 594,185 and 394,602.51 is: 587,606.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,020.25 : 594,185 = 394,602.51 : x
  2. Step 2: Convert to fraction form
    399,020.25/594,185 = 394,602.51/x
  3. Step 3: Cross multiply
    399,020.25x = 594,185 × 394,602.51
  4. Step 4: Simplify right side
    399,020.25x = 234,466,892,404.35
  5. Step 5: Solve for x
    x = 234,466,892,404.35/399,020.25
  6. Step 6: Final answer
    x = 587,606.50

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.