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Finding the Fourth Proportional to 1,322,800.80, 1,984,978.80 and 481,437.60

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Solution

The fourth proportional to 1,322,800.80, 1,984,978.80 and 481,437.60 is: 722,439.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322,800.80 : 1,984,978.80 = 481,437.60 : x
  2. Step 2: Convert to fraction form
    1,322,800.80/1,984,978.80 = 481,437.60/x
  3. Step 3: Cross multiply
    1,322,800.80x = 1,984,978.80 × 481,437.60
  4. Step 4: Simplify right side
    1,322,800.80x = 955,643,429,522.88
  5. Step 5: Solve for x
    x = 955,643,429,522.88/1,322,800.80
  6. Step 6: Final answer
    x = 722,439.41

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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.