Finding the Fourth Proportional to 1,278,361.44, 1,917,479.88 and 479,580.75
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Solution
The fourth proportional to 1,278,361.44, 1,917,479.88 and 479,580.75 is: 719,347.76
Step by Step Solution
- Step 1: Write the proportion equation
1,278,361.44 : 1,917,479.88 = 479,580.75 : x - Step 2: Convert to fraction form
1,278,361.44/1,917,479.88 = 479,580.75/x - Step 3: Cross multiply
1,278,361.44x = 1,917,479.88 × 479,580.75 - Step 4: Simplify right side
1,278,361.44x = 919,586,438,960.31 - Step 5: Solve for x
x = 919,586,438,960.31/1,278,361.44 - Step 6: Final answer
x = 719,347.76
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.