Finding the Fourth Proportional to 7,421,812.70, 10,405,467.70 and 7,421,812.70
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Solution
The fourth proportional to 7,421,812.70, 10,405,467.70 and 7,421,812.70 is: 10,405,467.70
Step by Step Solution
- Step 1: Write the proportion equation
7,421,812.70 : 10,405,467.70 = 7,421,812.70 : x - Step 2: Convert to fraction form
7,421,812.70/10,405,467.70 = 7,421,812.70/x - Step 3: Cross multiply
7,421,812.70x = 10,405,467.70 × 7,421,812.70 - Step 4: Simplify right side
7,421,812.70x = 77,227,432,325,299.78 - Step 5: Solve for x
x = 77,227,432,325,299.78/7,421,812.70 - Step 6: Final answer
x = 10,405,467.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.