Home / 489,447.18-675,437.00-285,638.22

Finding the Fourth Proportional to 489,447.18, 675,437.00 and 285,638.22

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Solution

The fourth proportional to 489,447.18, 675,437.00 and 285,638.22 is: 394,180.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,447.18 : 675,437.00 = 285,638.22 : x
  2. Step 2: Convert to fraction form
    489,447.18/675,437.00 = 285,638.22/x
  3. Step 3: Cross multiply
    489,447.18x = 675,437.00 × 285,638.22
  4. Step 4: Simplify right side
    489,447.18x = 192,930,620,973.95
  5. Step 5: Solve for x
    x = 192,930,620,973.95/489,447.18
  6. Step 6: Final answer
    x = 394,180.68

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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.