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Finding the Fourth Proportional to 965,907.20, 1,449,055.20 and 809,220.80

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Solution

The fourth proportional to 965,907.20, 1,449,055.20 and 809,220.80 is: 1,213,994.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    965,907.20 : 1,449,055.20 = 809,220.80 : x
  2. Step 2: Convert to fraction form
    965,907.20/1,449,055.20 = 809,220.80/x
  3. Step 3: Cross multiply
    965,907.20x = 1,449,055.20 × 809,220.80
  4. Step 4: Simplify right side
    965,907.20x = 1,172,605,608,188.16
  5. Step 5: Solve for x
    x = 1,172,605,608,188.16/965,907.20
  6. Step 6: Final answer
    x = 1,213,994.07

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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.