Finding the Fourth Proportional to 7,188,310.18, 9,919,916.08 and 3,925,147.68
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Solution
The fourth proportional to 7,188,310.18, 9,919,916.08 and 3,925,147.68 is: 5,416,730.03
Step by Step Solution
- Step 1: Write the proportion equation
7,188,310.18 : 9,919,916.08 = 3,925,147.68 : x - Step 2: Convert to fraction form
7,188,310.18/9,919,916.08 = 3,925,147.68/x - Step 3: Cross multiply
7,188,310.18x = 9,919,916.08 × 3,925,147.68 - Step 4: Simplify right side
7,188,310.18x = 38,937,135,587,206.70 - Step 5: Solve for x
x = 38,937,135,587,206.70/7,188,310.18 - Step 6: Final answer
x = 5,416,730.03
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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.