Finding the Fourth Proportional to 7,382,430.20, 11,073,645.30 and 5,217,591.80
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Solution
The fourth proportional to 7,382,430.20, 11,073,645.30 and 5,217,591.80 is: 7,826,387.70
Step by Step Solution
- Step 1: Write the proportion equation
7,382,430.20 : 11,073,645.30 = 5,217,591.80 : x - Step 2: Convert to fraction form
7,382,430.20/11,073,645.30 = 5,217,591.80/x - Step 3: Cross multiply
7,382,430.20x = 11,073,645.30 × 5,217,591.80 - Step 4: Simplify right side
7,382,430.20x = 57,777,760,913,388.54 - Step 5: Solve for x
x = 57,777,760,913,388.54/7,382,430.20 - Step 6: Final answer
x = 7,826,387.70
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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.