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Finding the Fourth Proportional to 479,480.80, 719,998.80 and 322,405.60

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Solution

The fourth proportional to 479,480.80, 719,998.80 and 322,405.60 is: 484,131.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,480.80 : 719,998.80 = 322,405.60 : x
  2. Step 2: Convert to fraction form
    479,480.80/719,998.80 = 322,405.60/x
  3. Step 3: Cross multiply
    479,480.80x = 719,998.80 × 322,405.60
  4. Step 4: Simplify right side
    479,480.80x = 232,131,645,113.28
  5. Step 5: Solve for x
    x = 232,131,645,113.28/479,480.80
  6. Step 6: Final answer
    x = 484,131.26

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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.