Home / 720,999.42-1,081,405.26-188,561.51

Finding the Fourth Proportional to 720,999.42, 1,081,405.26 and 188,561.51

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Solution

The fourth proportional to 720,999.42, 1,081,405.26 and 188,561.51 is: 282,817.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,999.42 : 1,081,405.26 = 188,561.51 : x
  2. Step 2: Convert to fraction form
    720,999.42/1,081,405.26 = 188,561.51/x
  3. Step 3: Cross multiply
    720,999.42x = 1,081,405.26 × 188,561.51
  4. Step 4: Simplify right side
    720,999.42x = 203,911,408,747.54
  5. Step 5: Solve for x
    x = 203,911,408,747.54/720,999.42
  6. Step 6: Final answer
    x = 282,817.72

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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.