Home / 489,177.12-674,778.40-307,601.60

Finding the Fourth Proportional to 489,177.12, 674,778.40 and 307,601.60

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Solution

The fourth proportional to 489,177.12, 674,778.40 and 307,601.60 is: 424,310.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,177.12 : 674,778.40 = 307,601.60 : x
  2. Step 2: Convert to fraction form
    489,177.12/674,778.40 = 307,601.60/x
  3. Step 3: Cross multiply
    489,177.12x = 674,778.40 × 307,601.60
  4. Step 4: Simplify right side
    489,177.12x = 207,562,915,485.44
  5. Step 5: Solve for x
    x = 207,562,915,485.44/489,177.12
  6. Step 6: Final answer
    x = 424,310.35

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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.