Finding the Fourth Proportional to 636,235.19, 878,021.36 and 345,866.28
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Solution
The fourth proportional to 636,235.19, 878,021.36 and 345,866.28 is: 477,304.60
Step by Step Solution
- Step 1: Write the proportion equation
636,235.19 : 878,021.36 = 345,866.28 : x - Step 2: Convert to fraction form
636,235.19/878,021.36 = 345,866.28/x - Step 3: Cross multiply
636,235.19x = 878,021.36 × 345,866.28 - Step 4: Simplify right side
636,235.19x = 303,677,981,543.74 - Step 5: Solve for x
x = 303,677,981,543.74/636,235.19 - Step 6: Final answer
x = 477,304.60
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.