Finding the Fourth Proportional to 665,361.36, 918,197.76 and 378,881.46
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Solution
The fourth proportional to 665,361.36, 918,197.76 and 378,881.46 is: 522,855.89
Step by Step Solution
- Step 1: Write the proportion equation
665,361.36 : 918,197.76 = 378,881.46 : x - Step 2: Convert to fraction form
665,361.36/918,197.76 = 378,881.46/x - Step 3: Cross multiply
665,361.36x = 918,197.76 × 378,881.46 - Step 4: Simplify right side
665,361.36x = 347,888,107,877.53 - Step 5: Solve for x
x = 347,888,107,877.53/665,361.36 - Step 6: Final answer
x = 522,855.89
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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.