Finding the Fourth Proportional to 716,467.69, 988,725.36 and 394,170.87
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Solution
The fourth proportional to 716,467.69, 988,725.36 and 394,170.87 is: 543,955.77
Step by Step Solution
- Step 1: Write the proportion equation
716,467.69 : 988,725.36 = 394,170.87 : x - Step 2: Convert to fraction form
716,467.69/988,725.36 = 394,170.87/x - Step 3: Cross multiply
716,467.69x = 988,725.36 × 394,170.87 - Step 4: Simplify right side
716,467.69x = 389,726,735,342.26 - Step 5: Solve for x
x = 389,726,735,342.26/716,467.69 - Step 6: Final answer
x = 543,955.77
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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.