Finding the Fourth Proportional to 7,541,920.40, 11,312,880.60 and 6,951,430.40
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Solution
The fourth proportional to 7,541,920.40, 11,312,880.60 and 6,951,430.40 is: 10,427,145.60
Step by Step Solution
- Step 1: Write the proportion equation
7,541,920.40 : 11,312,880.60 = 6,951,430.40 : x - Step 2: Convert to fraction form
7,541,920.40/11,312,880.60 = 6,951,430.40/x - Step 3: Cross multiply
7,541,920.40x = 11,312,880.60 × 6,951,430.40 - Step 4: Simplify right side
7,541,920.40x = 78,640,702,114,410.23 - Step 5: Solve for x
x = 78,640,702,114,410.23/7,541,920.40 - Step 6: Final answer
x = 10,427,145.60
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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.