Home / 1,993,007.80-2,989,949.10-645,232.60

Finding the Fourth Proportional to 1,993,007.80, 2,989,949.10 and 645,232.60

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Solution

The fourth proportional to 1,993,007.80, 2,989,949.10 and 645,232.60 is: 967,990.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993,007.80 : 2,989,949.10 = 645,232.60 : x
  2. Step 2: Convert to fraction form
    1,993,007.80/2,989,949.10 = 645,232.60/x
  3. Step 3: Cross multiply
    1,993,007.80x = 2,989,949.10 × 645,232.60
  4. Step 4: Simplify right side
    1,993,007.80x = 1,929,212,631,660.66
  5. Step 5: Solve for x
    x = 1,929,212,631,660.66/1,993,007.80
  6. Step 6: Final answer
    x = 967,990.51

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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.