Home / 489,186.39-674,791.25-307,610.85

Finding the Fourth Proportional to 489,186.39, 674,791.25 and 307,610.85

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Solution

The fourth proportional to 489,186.39, 674,791.25 and 307,610.85 is: 424,323.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,186.39 : 674,791.25 = 307,610.85 : x
  2. Step 2: Convert to fraction form
    489,186.39/674,791.25 = 307,610.85/x
  3. Step 3: Cross multiply
    489,186.39x = 674,791.25 × 307,610.85
  4. Step 4: Simplify right side
    489,186.39x = 207,573,108,447.01
  5. Step 5: Solve for x
    x = 207,573,108,447.01/489,186.39
  6. Step 6: Final answer
    x = 424,323.15

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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.