Finding the Fourth Proportional to 663,189.68, 915,201.60 and 361,383.68
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Solution
The fourth proportional to 663,189.68, 915,201.60 and 361,383.68 is: 498,709.39
Step by Step Solution
- Step 1: Write the proportion equation
663,189.68 : 915,201.60 = 361,383.68 : x - Step 2: Convert to fraction form
663,189.68/915,201.60 = 361,383.68/x - Step 3: Cross multiply
663,189.68x = 915,201.60 × 361,383.68 - Step 4: Simplify right side
663,189.68x = 330,738,922,149.89 - Step 5: Solve for x
x = 330,738,922,149.89/663,189.68 - Step 6: Final answer
x = 498,709.39
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.