Finding the Fourth Proportional to 919,739.07, 1,379,607.39 and 288,702.09
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Solution
The fourth proportional to 919,739.07, 1,379,607.39 and 288,702.09 is: 433,052.75
Step by Step Solution
- Step 1: Write the proportion equation
919,739.07 : 1,379,607.39 = 288,702.09 : x - Step 2: Convert to fraction form
919,739.07/1,379,607.39 = 288,702.09/x - Step 3: Cross multiply
919,739.07x = 1,379,607.39 × 288,702.09 - Step 4: Simplify right side
919,739.07x = 398,295,536,872.45 - Step 5: Solve for x
x = 398,295,536,872.45/919,739.07 - Step 6: Final answer
x = 433,052.75
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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.