Finding the Fourth Proportional to 811,649.22, 1,217,639.87 and 279,101.08
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Solution
The fourth proportional to 811,649.22, 1,217,639.87 and 279,101.08 is: 418,708.72
Step by Step Solution
- Step 1: Write the proportion equation
811,649.22 : 1,217,639.87 = 279,101.08 : x - Step 2: Convert to fraction form
811,649.22/1,217,639.87 = 279,101.08/x - Step 3: Cross multiply
811,649.22x = 1,217,639.87 × 279,101.08 - Step 4: Simplify right side
811,649.22x = 339,844,602,768.06 - Step 5: Solve for x
x = 339,844,602,768.06/811,649.22 - Step 6: Final answer
x = 418,708.72
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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.