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Finding the Fourth Proportional to 872,323.20, 1,308,571.20 and 303,616.80

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Solution

The fourth proportional to 872,323.20, 1,308,571.20 and 303,616.80 is: 455,455.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,323.20 : 1,308,571.20 = 303,616.80 : x
  2. Step 2: Convert to fraction form
    872,323.20/1,308,571.20 = 303,616.80/x
  3. Step 3: Cross multiply
    872,323.20x = 1,308,571.20 × 303,616.80
  4. Step 4: Simplify right side
    872,323.20x = 397,304,200,316.16
  5. Step 5: Solve for x
    x = 397,304,200,316.16/872,323.20
  6. Step 6: Final answer
    x = 455,455.27

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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.