Finding the Fourth Proportional to 716,465.18, 988,721.92 and 394,168.36
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Solution
The fourth proportional to 716,465.18, 988,721.92 and 394,168.36 is: 543,952.32
Step by Step Solution
- Step 1: Write the proportion equation
716,465.18 : 988,721.92 = 394,168.36 : x - Step 2: Convert to fraction form
716,465.18/988,721.92 = 394,168.36/x - Step 3: Cross multiply
716,465.18x = 988,721.92 × 394,168.36 - Step 4: Simplify right side
716,465.18x = 389,722,895,360.01 - Step 5: Solve for x
x = 389,722,895,360.01/716,465.18 - Step 6: Final answer
x = 543,952.32
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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.