Finding the Fourth Proportional to 987,809.70, 1,481,714.55 and 239,855.70
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Solution
The fourth proportional to 987,809.70, 1,481,714.55 and 239,855.70 is: 359,783.55
Step by Step Solution
- Step 1: Write the proportion equation
987,809.70 : 1,481,714.55 = 239,855.70 : x - Step 2: Convert to fraction form
987,809.70/1,481,714.55 = 239,855.70/x - Step 3: Cross multiply
987,809.70x = 1,481,714.55 × 239,855.70 - Step 4: Simplify right side
987,809.70x = 355,397,680,590.44 - Step 5: Solve for x
x = 355,397,680,590.44/987,809.70 - Step 6: Final answer
x = 359,783.55
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1.5x scale
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.