Finding the Fourth Proportional to 739,979.74, 1,021,175.22 and 400,447.99
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Solution
The fourth proportional to 739,979.74, 1,021,175.22 and 400,447.99 is: 552,619.95
Step by Step Solution
- Step 1: Write the proportion equation
739,979.74 : 1,021,175.22 = 400,447.99 : x - Step 2: Convert to fraction form
739,979.74/1,021,175.22 = 400,447.99/x - Step 3: Cross multiply
739,979.74x = 1,021,175.22 × 400,447.99 - Step 4: Simplify right side
739,979.74x = 408,927,564,286.81 - Step 5: Solve for x
x = 408,927,564,286.81/739,979.74 - Step 6: Final answer
x = 552,619.95
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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.