Home / 689,157.03-1,033,735.59-215,879.25

Finding the Fourth Proportional to 689,157.03, 1,033,735.59 and 215,879.25

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Solution

The fourth proportional to 689,157.03, 1,033,735.59 and 215,879.25 is: 323,818.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,157.03 : 1,033,735.59 = 215,879.25 : x
  2. Step 2: Convert to fraction form
    689,157.03/1,033,735.59 = 215,879.25/x
  3. Step 3: Cross multiply
    689,157.03x = 1,033,735.59 × 215,879.25
  4. Step 4: Simplify right side
    689,157.03x = 223,162,063,867.51
  5. Step 5: Solve for x
    x = 223,162,063,867.51/689,157.03
  6. Step 6: Final answer
    x = 323,818.89

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Double scale
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Similar ratio
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1.5x scale

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.