Home / 489,211.43-674,825.05-307,635.35

Finding the Fourth Proportional to 489,211.43, 674,825.05 and 307,635.35

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Solution

The fourth proportional to 489,211.43, 674,825.05 and 307,635.35 is: 424,356.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,211.43 : 674,825.05 = 307,635.35 : x
  2. Step 2: Convert to fraction form
    489,211.43/674,825.05 = 307,635.35/x
  3. Step 3: Cross multiply
    489,211.43x = 674,825.05 × 307,635.35
  4. Step 4: Simplify right side
    489,211.43x = 207,600,040,445.52
  5. Step 5: Solve for x
    x = 207,600,040,445.52/489,211.43
  6. Step 6: Final answer
    x = 424,356.48

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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.