Finding the Fourth Proportional to 857,558.43, 1,286,531.72 and 288,924.08
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Solution
The fourth proportional to 857,558.43, 1,286,531.72 and 288,924.08 is: 433,451.50
Step by Step Solution
- Step 1: Write the proportion equation
857,558.43 : 1,286,531.72 = 288,924.08 : x - Step 2: Convert to fraction form
857,558.43/1,286,531.72 = 288,924.08/x - Step 3: Cross multiply
857,558.43x = 1,286,531.72 × 288,924.08 - Step 4: Simplify right side
857,558.43x = 371,709,985,714.54 - Step 5: Solve for x
x = 371,709,985,714.54/857,558.43 - Step 6: Final answer
x = 433,451.50
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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.