Finding the Fourth Proportional to 1,388,020.80, 2,082,088.80 and 441,364.80
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Solution
The fourth proportional to 1,388,020.80, 2,082,088.80 and 441,364.80 is: 662,065.52
Step by Step Solution
- Step 1: Write the proportion equation
1,388,020.80 : 2,082,088.80 = 441,364.80 : x - Step 2: Convert to fraction form
1,388,020.80/2,082,088.80 = 441,364.80/x - Step 3: Cross multiply
1,388,020.80x = 2,082,088.80 × 441,364.80 - Step 4: Simplify right side
1,388,020.80x = 918,960,706,794.24 - Step 5: Solve for x
x = 918,960,706,794.24/1,388,020.80 - Step 6: Final answer
x = 662,065.52
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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.