Finding the Fourth Proportional to 5,431,873.20, 8,146,545.78 and 2,021,765.79
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Solution
The fourth proportional to 5,431,873.20, 8,146,545.78 and 2,021,765.79 is: 3,032,178.21
Step by Step Solution
- Step 1: Write the proportion equation
5,431,873.20 : 8,146,545.78 = 2,021,765.79 : x - Step 2: Convert to fraction form
5,431,873.20/8,146,545.78 = 2,021,765.79/x - Step 3: Cross multiply
5,431,873.20x = 8,146,545.78 × 2,021,765.79 - Step 4: Simplify right side
5,431,873.20x = 16,470,407,564,672.87 - Step 5: Solve for x
x = 16,470,407,564,672.87/5,431,873.20 - Step 6: Final answer
x = 3,032,178.21
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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.