Home / 1,663,232.80-2,491,162.80-1,288,039.20

Finding the Fourth Proportional to 1,663,232.80, 2,491,162.80 and 1,288,039.20

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Solution

The fourth proportional to 1,663,232.80, 2,491,162.80 and 1,288,039.20 is: 1,929,203.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,663,232.80 : 2,491,162.80 = 1,288,039.20 : x
  2. Step 2: Convert to fraction form
    1,663,232.80/2,491,162.80 = 1,288,039.20/x
  3. Step 3: Cross multiply
    1,663,232.80x = 2,491,162.80 × 1,288,039.20
  4. Step 4: Simplify right side
    1,663,232.80x = 3,208,715,339,981.76
  5. Step 5: Solve for x
    x = 3,208,715,339,981.76/1,663,232.80
  6. Step 6: Final answer
    x = 1,929,203.98

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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.