Home / 1,261,993.10-1,892,989.65-978,557.90

Finding the Fourth Proportional to 1,261,993.10, 1,892,989.65 and 978,557.90

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Solution

The fourth proportional to 1,261,993.10, 1,892,989.65 and 978,557.90 is: 1,467,836.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,993.10 : 1,892,989.65 = 978,557.90 : x
  2. Step 2: Convert to fraction form
    1,261,993.10/1,892,989.65 = 978,557.90/x
  3. Step 3: Cross multiply
    1,261,993.10x = 1,892,989.65 × 978,557.90
  4. Step 4: Simplify right side
    1,261,993.10x = 1,852,399,976,625.74
  5. Step 5: Solve for x
    x = 1,852,399,976,625.74/1,261,993.10
  6. Step 6: Final answer
    x = 1,467,836.85

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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.