Finding the Fourth Proportional to 636,692.36, 878,137.53 and 394,838.24
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Solution
The fourth proportional to 636,692.36, 878,137.53 and 394,838.24 is: 544,567.99
Step by Step Solution
- Step 1: Write the proportion equation
636,692.36 : 878,137.53 = 394,838.24 : x - Step 2: Convert to fraction form
636,692.36/878,137.53 = 394,838.24/x - Step 3: Cross multiply
636,692.36x = 878,137.53 × 394,838.24 - Step 4: Simplify right side
636,692.36x = 346,722,276,823.15 - Step 5: Solve for x
x = 346,722,276,823.15/636,692.36 - Step 6: Final answer
x = 544,567.99
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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.