Finding the Fourth Proportional to 420,193.80, 629,124.30 and 408,529.80
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Solution
The fourth proportional to 420,193.80, 629,124.30 and 408,529.80 is: 611,660.68
Step by Step Solution
- Step 1: Write the proportion equation
420,193.80 : 629,124.30 = 408,529.80 : x - Step 2: Convert to fraction form
420,193.80/629,124.30 = 408,529.80/x - Step 3: Cross multiply
420,193.80x = 629,124.30 × 408,529.80 - Step 4: Simplify right side
420,193.80x = 257,016,024,454.14 - Step 5: Solve for x
x = 257,016,024,454.14/420,193.80 - Step 6: Final answer
x = 611,660.68
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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.