Home / 1,989,311.30-2,979,480.56-1,392,934.93

Finding the Fourth Proportional to 1,989,311.30, 2,979,480.56 and 1,392,934.93

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Solution

The fourth proportional to 1,989,311.30, 2,979,480.56 and 1,392,934.93 is: 2,086,260.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989,311.30 : 2,979,480.56 = 1,392,934.93 : x
  2. Step 2: Convert to fraction form
    1,989,311.30/2,979,480.56 = 1,392,934.93/x
  3. Step 3: Cross multiply
    1,989,311.30x = 2,979,480.56 × 1,392,934.93
  4. Step 4: Simplify right side
    1,989,311.30x = 4,150,222,538,701.84
  5. Step 5: Solve for x
    x = 4,150,222,538,701.84/1,989,311.30
  6. Step 6: Final answer
    x = 2,086,260.98

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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.