Finding the Fourth Proportional to 7,420,976.81, 11,132,863.62 and 2,811,343.79
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Solution
The fourth proportional to 7,420,976.81, 11,132,863.62 and 2,811,343.79 is: 4,217,545.45
Step by Step Solution
- Step 1: Write the proportion equation
7,420,976.81 : 11,132,863.62 = 2,811,343.79 : x - Step 2: Convert to fraction form
7,420,976.81/11,132,863.62 = 2,811,343.79/x - Step 3: Cross multiply
7,420,976.81x = 11,132,863.62 × 2,811,343.79 - Step 4: Simplify right side
7,420,976.81x = 31,298,306,947,339.60 - Step 5: Solve for x
x = 31,298,306,947,339.60/7,420,976.81 - Step 6: Final answer
x = 4,217,545.45
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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.