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Finding the Fourth Proportional to 489,853.67, 675,951.83 and 274,951.76

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Solution

The fourth proportional to 489,853.67, 675,951.83 and 274,951.76 is: 379,407.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,853.67 : 675,951.83 = 274,951.76 : x
  2. Step 2: Convert to fraction form
    489,853.67/675,951.83 = 274,951.76/x
  3. Step 3: Cross multiply
    489,853.67x = 675,951.83 × 274,951.76
  4. Step 4: Simplify right side
    489,853.67x = 185,854,140,579.20
  5. Step 5: Solve for x
    x = 185,854,140,579.20/489,853.67
  6. Step 6: Final answer
    x = 379,407.47

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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.