Finding the Fourth Proportional to 691,639.25, 955,249.49 and 464,891.09
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Solution
The fourth proportional to 691,639.25, 955,249.49 and 464,891.09 is: 642,078.91
Step by Step Solution
- Step 1: Write the proportion equation
691,639.25 : 955,249.49 = 464,891.09 : x - Step 2: Convert to fraction form
691,639.25/955,249.49 = 464,891.09/x - Step 3: Cross multiply
691,639.25x = 955,249.49 × 464,891.09 - Step 4: Simplify right side
691,639.25x = 444,086,974,303.59 - Step 5: Solve for x
x = 444,086,974,303.59/691,639.25 - Step 6: Final answer
x = 642,078.91
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.