Finding the Fourth Proportional to 1,408,439.06, 2,112,621.60 and 397,630.88
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Solution
The fourth proportional to 1,408,439.06, 2,112,621.60 and 397,630.88 is: 596,435.88
Step by Step Solution
- Step 1: Write the proportion equation
1,408,439.06 : 2,112,621.60 = 397,630.88 : x - Step 2: Convert to fraction form
1,408,439.06/2,112,621.60 = 397,630.88/x - Step 3: Cross multiply
1,408,439.06x = 2,112,621.60 × 397,630.88 - Step 4: Simplify right side
1,408,439.06x = 840,043,585,915.01 - Step 5: Solve for x
x = 840,043,585,915.01/1,408,439.06 - Step 6: Final answer
x = 596,435.88
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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.