Finding the Fourth Proportional to 716,465.36, 988,722.16 and 394,168.53
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Solution
The fourth proportional to 716,465.36, 988,722.16 and 394,168.53 is: 543,952.55
Step by Step Solution
- Step 1: Write the proportion equation
716,465.36 : 988,722.16 = 394,168.53 : x - Step 2: Convert to fraction form
716,465.36/988,722.16 = 394,168.53/x - Step 3: Cross multiply
716,465.36x = 988,722.16 × 394,168.53 - Step 4: Simplify right side
716,465.36x = 389,723,163,107.91 - Step 5: Solve for x
x = 389,723,163,107.91/716,465.36 - Step 6: Final answer
x = 543,952.55
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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.