Home / 780,139.22-1,170,388.44-330,877.58

Finding the Fourth Proportional to 780,139.22, 1,170,388.44 and 330,877.58

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Solution

The fourth proportional to 780,139.22, 1,170,388.44 and 330,877.58 is: 496,392.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,139.22 : 1,170,388.44 = 330,877.58 : x
  2. Step 2: Convert to fraction form
    780,139.22/1,170,388.44 = 330,877.58/x
  3. Step 3: Cross multiply
    780,139.22x = 1,170,388.44 × 330,877.58
  4. Step 4: Simplify right side
    780,139.22x = 387,255,288,835.23
  5. Step 5: Solve for x
    x = 387,255,288,835.23/780,139.22
  6. Step 6: Final answer
    x = 496,392.54

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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.