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Finding the Fourth Proportional to 489,746.45, 675,798.19 and 274,910.15

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Solution

The fourth proportional to 489,746.45, 675,798.19 and 274,910.15 is: 379,346.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,746.45 : 675,798.19 = 274,910.15 : x
  2. Step 2: Convert to fraction form
    489,746.45/675,798.19 = 274,910.15/x
  3. Step 3: Cross multiply
    489,746.45x = 675,798.19 × 274,910.15
  4. Step 4: Simplify right side
    489,746.45x = 185,783,782,784.85
  5. Step 5: Solve for x
    x = 185,783,782,784.85/489,746.45
  6. Step 6: Final answer
    x = 379,346.87

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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.