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Finding the Fourth Proportional to 807,663.53, 1,211,262 and 275,172.77

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Solution

The fourth proportional to 807,663.53, 1,211,262 and 275,172.77 is: 412,679.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,663.53 : 1,211,262 = 275,172.77 : x
  2. Step 2: Convert to fraction form
    807,663.53/1,211,262 = 275,172.77/x
  3. Step 3: Cross multiply
    807,663.53x = 1,211,262 × 275,172.77
  4. Step 4: Simplify right side
    807,663.53x = 333,306,313,679.43
  5. Step 5: Solve for x
    x = 333,306,313,679.43/807,663.53
  6. Step 6: Final answer
    x = 412,679.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.