Finding the Fourth Proportional to 5,207,858.10, 7,811,787.15 and 1,421,723.70
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Solution
The fourth proportional to 5,207,858.10, 7,811,787.15 and 1,421,723.70 is: 2,132,585.55
Step by Step Solution
- Step 1: Write the proportion equation
5,207,858.10 : 7,811,787.15 = 1,421,723.70 : x - Step 2: Convert to fraction form
5,207,858.10/7,811,787.15 = 1,421,723.70/x - Step 3: Cross multiply
5,207,858.10x = 7,811,787.15 × 1,421,723.70 - Step 4: Simplify right side
5,207,858.10x = 11,106,202,930,510.46 - Step 5: Solve for x
x = 11,106,202,930,510.46/5,207,858.10 - Step 6: Final answer
x = 2,132,585.55
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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.