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Finding the Fourth Proportional to 489,856.55, 675,996.10 and 274,991.09

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Solution

The fourth proportional to 489,856.55, 675,996.10 and 274,991.09 is: 379,484.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,856.55 : 675,996.10 = 274,991.09 : x
  2. Step 2: Convert to fraction form
    489,856.55/675,996.10 = 274,991.09/x
  3. Step 3: Cross multiply
    489,856.55x = 675,996.10 × 274,991.09
  4. Step 4: Simplify right side
    489,856.55x = 185,892,900,307.29
  5. Step 5: Solve for x
    x = 185,892,900,307.29/489,856.55
  6. Step 6: Final answer
    x = 379,484.37

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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.