Finding the Fourth Proportional to 811,272.31, 1,217,107.73 and 278,800.99
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Solution
The fourth proportional to 811,272.31, 1,217,107.73 and 278,800.99 is: 418,269.96
Step by Step Solution
- Step 1: Write the proportion equation
811,272.31 : 1,217,107.73 = 278,800.99 : x - Step 2: Convert to fraction form
811,272.31/1,217,107.73 = 278,800.99/x - Step 3: Cross multiply
811,272.31x = 1,217,107.73 × 278,800.99 - Step 4: Simplify right side
811,272.31x = 339,330,832,581.11 - Step 5: Solve for x
x = 339,330,832,581.11/811,272.31 - Step 6: Final answer
x = 418,269.96
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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.