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Finding the Fourth Proportional to 768,809.57, 1,060,950.87 and 419,950.26

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Solution

The fourth proportional to 768,809.57, 1,060,950.87 and 419,950.26 is: 579,527.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,809.57 : 1,060,950.87 = 419,950.26 : x
  2. Step 2: Convert to fraction form
    768,809.57/1,060,950.87 = 419,950.26/x
  3. Step 3: Cross multiply
    768,809.57x = 1,060,950.87 × 419,950.26
  4. Step 4: Simplify right side
    768,809.57x = 445,546,591,603.98
  5. Step 5: Solve for x
    x = 445,546,591,603.98/768,809.57
  6. Step 6: Final answer
    x = 579,527.90

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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.