Home / 1,491,036.80-2,236,555.20-1,288,083.20

Finding the Fourth Proportional to 1,491,036.80, 2,236,555.20 and 1,288,083.20

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Solution

The fourth proportional to 1,491,036.80, 2,236,555.20 and 1,288,083.20 is: 1,932,124.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,491,036.80 : 2,236,555.20 = 1,288,083.20 : x
  2. Step 2: Convert to fraction form
    1,491,036.80/2,236,555.20 = 1,288,083.20/x
  3. Step 3: Cross multiply
    1,491,036.80x = 2,236,555.20 × 1,288,083.20
  4. Step 4: Simplify right side
    1,491,036.80x = 2,880,869,178,992.64
  5. Step 5: Solve for x
    x = 2,880,869,178,992.64/1,491,036.80
  6. Step 6: Final answer
    x = 1,932,124.80

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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.