Home / 1,379,565.82-2,069,660.06-420,107.27

Finding the Fourth Proportional to 1,379,565.82, 2,069,660.06 and 420,107.27

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Solution

The fourth proportional to 1,379,565.82, 2,069,660.06 and 420,107.27 is: 630,255.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379,565.82 : 2,069,660.06 = 420,107.27 : x
  2. Step 2: Convert to fraction form
    1,379,565.82/2,069,660.06 = 420,107.27/x
  3. Step 3: Cross multiply
    1,379,565.82x = 2,069,660.06 × 420,107.27
  4. Step 4: Simplify right side
    1,379,565.82x = 869,479,235,534.10
  5. Step 5: Solve for x
    x = 869,479,235,534.10/1,379,565.82
  6. Step 6: Final answer
    x = 630,255.71

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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.