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Finding the Fourth Proportional to 489,856.37, 675,995.84 and 274,990.91

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Solution

The fourth proportional to 489,856.37, 675,995.84 and 274,990.91 is: 379,484.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,856.37 : 675,995.84 = 274,990.91 : x
  2. Step 2: Convert to fraction form
    489,856.37/675,995.84 = 274,990.91/x
  3. Step 3: Cross multiply
    489,856.37x = 675,995.84 × 274,990.91
  4. Step 4: Simplify right side
    489,856.37x = 185,892,706,442.88
  5. Step 5: Solve for x
    x = 185,892,706,442.88/489,856.37
  6. Step 6: Final answer
    x = 379,484.11

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1.5x scale

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.