Finding the Fourth Proportional to 7,239,554.12, 9,992,324.57 and 4,143,872.23
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Solution
The fourth proportional to 7,239,554.12, 9,992,324.57 and 4,143,872.23 is: 5,719,539.58
Step by Step Solution
- Step 1: Write the proportion equation
7,239,554.12 : 9,992,324.57 = 4,143,872.23 : x - Step 2: Convert to fraction form
7,239,554.12/9,992,324.57 = 4,143,872.23/x - Step 3: Cross multiply
7,239,554.12x = 9,992,324.57 × 4,143,872.23 - Step 4: Simplify right side
7,239,554.12x = 41,406,916,298,769.70 - Step 5: Solve for x
x = 41,406,916,298,769.70/7,239,554.12 - Step 6: Final answer
x = 5,719,539.58
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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.