Home / 826,686,028.80-1,240,135,331.40-412,374,625.20

Finding the Fourth Proportional to 826,686,028.80, 1,240,135,331.40 and 412,374,625.20

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Solution

The fourth proportional to 826,686,028.80, 1,240,135,331.40 and 412,374,625.20 is: 618,614,957.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,686,028.80 : 1,240,135,331.40 = 412,374,625.20 : x
  2. Step 2: Convert to fraction form
    826,686,028.80/1,240,135,331.40 = 412,374,625.20/x
  3. Step 3: Cross multiply
    826,686,028.80x = 1,240,135,331.40 × 412,374,625.20
  4. Step 4: Simplify right side
    826,686,028.80x = 511,400,342,483,352,832
  5. Step 5: Solve for x
    x = 511,400,342,483,352,832/826,686,028.80
  6. Step 6: Final answer
    x = 618,614,957.39

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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.