Finding the Fourth Proportional to 612,736.29, 919,965.57 and 313,431.68
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Solution
The fourth proportional to 612,736.29, 919,965.57 and 313,431.68 is: 470,588.01
Step by Step Solution
- Step 1: Write the proportion equation
612,736.29 : 919,965.57 = 313,431.68 : x - Step 2: Convert to fraction form
612,736.29/919,965.57 = 313,431.68/x - Step 3: Cross multiply
612,736.29x = 919,965.57 × 313,431.68 - Step 4: Simplify right side
612,736.29x = 288,346,354,147.26 - Step 5: Solve for x
x = 288,346,354,147.26/612,736.29 - Step 6: Final answer
x = 470,588.01
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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.