Finding the Fourth Proportional to 764,149.63, 1,054,537.41 and 420,017.38
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Solution
The fourth proportional to 764,149.63, 1,054,537.41 and 420,017.38 is: 579,629.99
Step by Step Solution
- Step 1: Write the proportion equation
764,149.63 : 1,054,537.41 = 420,017.38 : x - Step 2: Convert to fraction form
764,149.63/1,054,537.41 = 420,017.38/x - Step 3: Cross multiply
764,149.63x = 1,054,537.41 × 420,017.38 - Step 4: Simplify right side
764,149.63x = 442,924,042,568.08 - Step 5: Solve for x
x = 442,924,042,568.08/764,149.63 - Step 6: Final answer
x = 579,629.99
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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.