Finding the Fourth Proportional to 764,616.57, 1,055,238.09 and 420,513.13
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Solution
The fourth proportional to 764,616.57, 1,055,238.09 and 420,513.13 is: 580,345.09
Step by Step Solution
- Step 1: Write the proportion equation
764,616.57 : 1,055,238.09 = 420,513.13 : x - Step 2: Convert to fraction form
764,616.57/1,055,238.09 = 420,513.13/x - Step 3: Cross multiply
764,616.57x = 1,055,238.09 × 420,513.13 - Step 4: Simplify right side
764,616.57x = 443,741,469,483.03 - Step 5: Solve for x
x = 443,741,469,483.03/764,616.57 - Step 6: Final answer
x = 580,345.09
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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.