Home / 685,690.20-1,026,785.70-545,722.20

Finding the Fourth Proportional to 685,690.20, 1,026,785.70 and 545,722.20

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Solution

The fourth proportional to 685,690.20, 1,026,785.70 and 545,722.20 is: 817,190.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,690.20 : 1,026,785.70 = 545,722.20 : x
  2. Step 2: Convert to fraction form
    685,690.20/1,026,785.70 = 545,722.20/x
  3. Step 3: Cross multiply
    685,690.20x = 1,026,785.70 × 545,722.20
  4. Step 4: Simplify right side
    685,690.20x = 560,339,751,132.54
  5. Step 5: Solve for x
    x = 560,339,751,132.54/685,690.20
  6. Step 6: Final answer
    x = 817,190.84

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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.