Home / 1,992,912.40-2,989,660.20-644,845.60

Finding the Fourth Proportional to 1,992,912.40, 2,989,660.20 and 644,845.60

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Solution

The fourth proportional to 1,992,912.40, 2,989,660.20 and 644,845.60 is: 967,362.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992,912.40 : 2,989,660.20 = 644,845.60 : x
  2. Step 2: Convert to fraction form
    1,992,912.40/2,989,660.20 = 644,845.60/x
  3. Step 3: Cross multiply
    1,992,912.40x = 2,989,660.20 × 644,845.60
  4. Step 4: Simplify right side
    1,992,912.40x = 1,927,869,225,465.12
  5. Step 5: Solve for x
    x = 1,927,869,225,465.12/1,992,912.40
  6. Step 6: Final answer
    x = 967,362.75

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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.