Home / 815,858.96-1,223,788.44-310,303.15

Finding the Fourth Proportional to 815,858.96, 1,223,788.44 and 310,303.15

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Solution

The fourth proportional to 815,858.96, 1,223,788.44 and 310,303.15 is: 465,454.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,858.96 : 1,223,788.44 = 310,303.15 : x
  2. Step 2: Convert to fraction form
    815,858.96/1,223,788.44 = 310,303.15/x
  3. Step 3: Cross multiply
    815,858.96x = 1,223,788.44 × 310,303.15
  4. Step 4: Simplify right side
    815,858.96x = 379,745,407,865.59
  5. Step 5: Solve for x
    x = 379,745,407,865.59/815,858.96
  6. Step 6: Final answer
    x = 465,454.73

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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.