Home / 1,219,119.42-1,828,766.77-420,389.41

Finding the Fourth Proportional to 1,219,119.42, 1,828,766.77 and 420,389.41

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Solution

The fourth proportional to 1,219,119.42, 1,828,766.77 and 420,389.41 is: 630,614.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,119.42 : 1,828,766.77 = 420,389.41 : x
  2. Step 2: Convert to fraction form
    1,219,119.42/1,828,766.77 = 420,389.41/x
  3. Step 3: Cross multiply
    1,219,119.42x = 1,828,766.77 × 420,389.41
  4. Step 4: Simplify right side
    1,219,119.42x = 768,794,181,273.95
  5. Step 5: Solve for x
    x = 768,794,181,273.95/1,219,119.42
  6. Step 6: Final answer
    x = 630,614.33

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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.