Home / 685,070.80-1,027,704.65-211,793.06

Finding the Fourth Proportional to 685,070.80, 1,027,704.65 and 211,793.06

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Solution

The fourth proportional to 685,070.80, 1,027,704.65 and 211,793.06 is: 317,720.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,070.80 : 1,027,704.65 = 211,793.06 : x
  2. Step 2: Convert to fraction form
    685,070.80/1,027,704.65 = 211,793.06/x
  3. Step 3: Cross multiply
    685,070.80x = 1,027,704.65 × 211,793.06
  4. Step 4: Simplify right side
    685,070.80x = 217,660,714,110.03
  5. Step 5: Solve for x
    x = 217,660,714,110.03/685,070.80
  6. Step 6: Final answer
    x = 317,720.03

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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.