Home / 1,328,535.09-1,993,118.84-429,976.83

Finding the Fourth Proportional to 1,328,535.09, 1,993,118.84 and 429,976.83

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Solution

The fourth proportional to 1,328,535.09, 1,993,118.84 and 429,976.83 is: 645,067.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,535.09 : 1,993,118.84 = 429,976.83 : x
  2. Step 2: Convert to fraction form
    1,328,535.09/1,993,118.84 = 429,976.83/x
  3. Step 3: Cross multiply
    1,328,535.09x = 1,993,118.84 × 429,976.83
  4. Step 4: Simplify right side
    1,328,535.09x = 856,994,927,573.20
  5. Step 5: Solve for x
    x = 856,994,927,573.20/1,328,535.09
  6. Step 6: Final answer
    x = 645,067.59

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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.