Finding the Fourth Proportional to 427,170.88, 643,639.84 and 353,920.96
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Solution
The fourth proportional to 427,170.88, 643,639.84 and 353,920.96 is: 533,270.50
Step by Step Solution
- Step 1: Write the proportion equation
427,170.88 : 643,639.84 = 353,920.96 : x - Step 2: Convert to fraction form
427,170.88/643,639.84 = 353,920.96/x - Step 3: Cross multiply
427,170.88x = 643,639.84 × 353,920.96 - Step 4: Simplify right side
427,170.88x = 227,797,630,067.05 - Step 5: Solve for x
x = 227,797,630,067.05/427,170.88 - Step 6: Final answer
x = 533,270.50
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.