Finding the Fourth Proportional to 716,466.78, 988,724.12 and 394,169.96
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Solution
The fourth proportional to 716,466.78, 988,724.12 and 394,169.96 is: 543,954.52
Step by Step Solution
- Step 1: Write the proportion equation
716,466.78 : 988,724.12 = 394,169.96 : x - Step 2: Convert to fraction form
716,466.78/988,724.12 = 394,169.96/x - Step 3: Cross multiply
716,466.78x = 988,724.12 × 394,169.96 - Step 4: Simplify right side
716,466.78x = 389,725,339,916.97 - Step 5: Solve for x
x = 389,725,339,916.97/716,466.78 - Step 6: Final answer
x = 543,954.52
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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.