Finding the Fourth Proportional to 8,342,128.80, 12,497,446.80 and 4,284,806.40
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Solution
The fourth proportional to 8,342,128.80, 12,497,446.80 and 4,284,806.40 is: 6,419,121.70
Step by Step Solution
- Step 1: Write the proportion equation
8,342,128.80 : 12,497,446.80 = 4,284,806.40 : x - Step 2: Convert to fraction form
8,342,128.80/12,497,446.80 = 4,284,806.40/x - Step 3: Cross multiply
8,342,128.80x = 12,497,446.80 × 4,284,806.40 - Step 4: Simplify right side
8,342,128.80x = 53,549,140,032,299.53 - Step 5: Solve for x
x = 53,549,140,032,299.53/8,342,128.80 - Step 6: Final answer
x = 6,419,121.70
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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.