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Finding the Fourth Proportional to 768,562.56, 1,153,546.99 and 389,744.73

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Solution

The fourth proportional to 768,562.56, 1,153,546.99 and 389,744.73 is: 584,973.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,562.56 : 1,153,546.99 = 389,744.73 : x
  2. Step 2: Convert to fraction form
    768,562.56/1,153,546.99 = 389,744.73/x
  3. Step 3: Cross multiply
    768,562.56x = 1,153,546.99 × 389,744.73
  4. Step 4: Simplify right side
    768,562.56x = 449,588,859,185.50
  5. Step 5: Solve for x
    x = 449,588,859,185.50/768,562.56
  6. Step 6: Final answer
    x = 584,973.67

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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.