Home / 1,280,491.20-1,920,171-681,310.32

Finding the Fourth Proportional to 1,280,491.20, 1,920,171 and 681,310.32

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Solution

The fourth proportional to 1,280,491.20, 1,920,171 and 681,310.32 is: 1,021,664.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,491.20 : 1,920,171 = 681,310.32 : x
  2. Step 2: Convert to fraction form
    1,280,491.20/1,920,171 = 681,310.32/x
  3. Step 3: Cross multiply
    1,280,491.20x = 1,920,171 × 681,310.32
  4. Step 4: Simplify right side
    1,280,491.20x = 1,308,232,318,464.72
  5. Step 5: Solve for x
    x = 1,308,232,318,464.72/1,280,491.20
  6. Step 6: Final answer
    x = 1,021,664.44

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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.