Home / 1,989,015.84-2,983,969.44-726,811.20

Finding the Fourth Proportional to 1,989,015.84, 2,983,969.44 and 726,811.20

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Solution

The fourth proportional to 1,989,015.84, 2,983,969.44 and 726,811.20 is: 1,090,379.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989,015.84 : 2,983,969.44 = 726,811.20 : x
  2. Step 2: Convert to fraction form
    1,989,015.84/2,983,969.44 = 726,811.20/x
  3. Step 3: Cross multiply
    1,989,015.84x = 2,983,969.44 × 726,811.20
  4. Step 4: Simplify right side
    1,989,015.84x = 2,168,782,409,449.73
  5. Step 5: Solve for x
    x = 2,168,782,409,449.73/1,989,015.84
  6. Step 6: Final answer
    x = 1,090,379.66

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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.