Home / 1,219,081.05-1,828,741.86-420,257.43

Finding the Fourth Proportional to 1,219,081.05, 1,828,741.86 and 420,257.43

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Solution

The fourth proportional to 1,219,081.05, 1,828,741.86 and 420,257.43 is: 630,427.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,081.05 : 1,828,741.86 = 420,257.43 : x
  2. Step 2: Convert to fraction form
    1,219,081.05/1,828,741.86 = 420,257.43/x
  3. Step 3: Cross multiply
    1,219,081.05x = 1,828,741.86 × 420,257.43
  4. Step 4: Simplify right side
    1,219,081.05x = 768,542,354,217.02
  5. Step 5: Solve for x
    x = 768,542,354,217.02/1,219,081.05
  6. Step 6: Final answer
    x = 630,427.61

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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.