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Finding the Fourth Proportional to 3,938,266.80, 5,907,400.20 and 946,450.80

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Solution

The fourth proportional to 3,938,266.80, 5,907,400.20 and 946,450.80 is: 1,419,676.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938,266.80 : 5,907,400.20 = 946,450.80 : x
  2. Step 2: Convert to fraction form
    3,938,266.80/5,907,400.20 = 946,450.80/x
  3. Step 3: Cross multiply
    3,938,266.80x = 5,907,400.20 × 946,450.80
  4. Step 4: Simplify right side
    3,938,266.80x = 5,591,063,645,210.16
  5. Step 5: Solve for x
    x = 5,591,063,645,210.16/3,938,266.80
  6. Step 6: Final answer
    x = 1,419,676.20

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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.