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Finding the Fourth Proportional to 489,504.51, 675,558.97 and 285,621.11

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Solution

The fourth proportional to 489,504.51, 675,558.97 and 285,621.11 is: 394,182.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,504.51 : 675,558.97 = 285,621.11 : x
  2. Step 2: Convert to fraction form
    489,504.51/675,558.97 = 285,621.11/x
  3. Step 3: Cross multiply
    489,504.51x = 675,558.97 × 285,621.11
  4. Step 4: Simplify right side
    489,504.51x = 192,953,902,881.86
  5. Step 5: Solve for x
    x = 192,953,902,881.86/489,504.51
  6. Step 6: Final answer
    x = 394,182.07

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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.