Finding the Fourth Proportional to 811,622.23, 1,217,420.99 and 279,147.87
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Solution
The fourth proportional to 811,622.23, 1,217,420.99 and 279,147.87 is: 418,717.56
Step by Step Solution
- Step 1: Write the proportion equation
811,622.23 : 1,217,420.99 = 279,147.87 : x - Step 2: Convert to fraction form
811,622.23/1,217,420.99 = 279,147.87/x - Step 3: Cross multiply
811,622.23x = 1,217,420.99 × 279,147.87 - Step 4: Simplify right side
811,622.23x = 339,840,475,902.86 - Step 5: Solve for x
x = 339,840,475,902.86/811,622.23 - Step 6: Final answer
x = 418,717.56
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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.