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Finding the Fourth Proportional to 544,450.80, 815,801.40 and 455,221.20

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Solution

The fourth proportional to 544,450.80, 815,801.40 and 455,221.20 is: 682,100.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,450.80 : 815,801.40 = 455,221.20 : x
  2. Step 2: Convert to fraction form
    544,450.80/815,801.40 = 455,221.20/x
  3. Step 3: Cross multiply
    544,450.80x = 815,801.40 × 455,221.20
  4. Step 4: Simplify right side
    544,450.80x = 371,370,092,269.68
  5. Step 5: Solve for x
    x = 371,370,092,269.68/544,450.80
  6. Step 6: Final answer
    x = 682,100.37

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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.