Finding the Fourth Proportional to 5,276,543.70, 7,914,815.55 and 1,287,455.70
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Solution
The fourth proportional to 5,276,543.70, 7,914,815.55 and 1,287,455.70 is: 1,931,183.55
Step by Step Solution
- Step 1: Write the proportion equation
5,276,543.70 : 7,914,815.55 = 1,287,455.70 : x - Step 2: Convert to fraction form
5,276,543.70/7,914,815.55 = 1,287,455.70/x - Step 3: Cross multiply
5,276,543.70x = 7,914,815.55 × 1,287,455.70 - Step 4: Simplify right side
5,276,543.70x = 10,189,974,394,296.13 - Step 5: Solve for x
x = 10,189,974,394,296.13/5,276,543.70 - Step 6: Final answer
x = 1,931,183.55
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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.