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Finding the Fourth Proportional to 544,538.40, 816,807.60 and 394,072.80

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Solution

The fourth proportional to 544,538.40, 816,807.60 and 394,072.80 is: 591,109.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,538.40 : 816,807.60 = 394,072.80 : x
  2. Step 2: Convert to fraction form
    544,538.40/816,807.60 = 394,072.80/x
  3. Step 3: Cross multiply
    544,538.40x = 816,807.60 × 394,072.80
  4. Step 4: Simplify right side
    544,538.40x = 321,881,657,993.28
  5. Step 5: Solve for x
    x = 321,881,657,993.28/544,538.40
  6. Step 6: Final answer
    x = 591,109.20

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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.