Home / 1,326,626.20-1,990,329.72-428,051.08

Finding the Fourth Proportional to 1,326,626.20, 1,990,329.72 and 428,051.08

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Solution

The fourth proportional to 1,326,626.20, 1,990,329.72 and 428,051.08 is: 642,202.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,626.20 : 1,990,329.72 = 428,051.08 : x
  2. Step 2: Convert to fraction form
    1,326,626.20/1,990,329.72 = 428,051.08/x
  3. Step 3: Cross multiply
    1,326,626.20x = 1,990,329.72 × 428,051.08
  4. Step 4: Simplify right side
    1,326,626.20x = 851,962,786,202.10
  5. Step 5: Solve for x
    x = 851,962,786,202.10/1,326,626.20
  6. Step 6: Final answer
    x = 642,202.59

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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.