Finding the Fourth Proportional to 5,378,125.68, 7,421,715.72 and 2,930,757.12
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Solution
The fourth proportional to 5,378,125.68, 7,421,715.72 and 2,930,757.12 is: 4,044,391.57
Step by Step Solution
- Step 1: Write the proportion equation
5,378,125.68 : 7,421,715.72 = 2,930,757.12 : x - Step 2: Convert to fraction form
5,378,125.68/7,421,715.72 = 2,930,757.12/x - Step 3: Cross multiply
5,378,125.68x = 7,421,715.72 × 2,930,757.12 - Step 4: Simplify right side
5,378,125.68x = 21,751,246,189,005.93 - Step 5: Solve for x
x = 21,751,246,189,005.93/5,378,125.68 - Step 6: Final answer
x = 4,044,391.57
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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.