Finding the Fourth Proportional to 426,239.80, 639,705.30 and 412,415.80
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Solution
The fourth proportional to 426,239.80, 639,705.30 and 412,415.80 is: 618,958.09
Step by Step Solution
- Step 1: Write the proportion equation
426,239.80 : 639,705.30 = 412,415.80 : x - Step 2: Convert to fraction form
426,239.80/639,705.30 = 412,415.80/x - Step 3: Cross multiply
426,239.80x = 639,705.30 × 412,415.80 - Step 4: Simplify right side
426,239.80x = 263,824,573,063.74 - Step 5: Solve for x
x = 263,824,573,063.74/426,239.80 - Step 6: Final answer
x = 618,958.09
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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.