Finding the Fourth Proportional to 810,643.12, 1,215,673.08 and 278,026
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Solution
The fourth proportional to 810,643.12, 1,215,673.08 and 278,026 is: 416,938.99
Step by Step Solution
- Step 1: Write the proportion equation
810,643.12 : 1,215,673.08 = 278,026 : x - Step 2: Convert to fraction form
810,643.12/1,215,673.08 = 278,026/x - Step 3: Cross multiply
810,643.12x = 1,215,673.08 × 278,026 - Step 4: Simplify right side
810,643.12x = 337,988,723,740.08 - Step 5: Solve for x
x = 337,988,723,740.08/810,643.12 - Step 6: Final answer
x = 416,938.99
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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.