Home / 1,284,487.06-1,918,918.16-831,517.78

Finding the Fourth Proportional to 1,284,487.06, 1,918,918.16 and 831,517.78

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Solution

The fourth proportional to 1,284,487.06, 1,918,918.16 and 831,517.78 is: 1,242,219.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,487.06 : 1,918,918.16 = 831,517.78 : x
  2. Step 2: Convert to fraction form
    1,284,487.06/1,918,918.16 = 831,517.78/x
  3. Step 3: Cross multiply
    1,284,487.06x = 1,918,918.16 × 831,517.78
  4. Step 4: Simplify right side
    1,284,487.06x = 1,595,614,568,404.88
  5. Step 5: Solve for x
    x = 1,595,614,568,404.88/1,284,487.06
  6. Step 6: Final answer
    x = 1,242,219.26

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.