Finding the Fourth Proportional to 638,012.81, 880,496.87 and 351,532.82
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Solution
The fourth proportional to 638,012.81, 880,496.87 and 351,532.82 is: 485,136.88
Step by Step Solution
- Step 1: Write the proportion equation
638,012.81 : 880,496.87 = 351,532.82 : x - Step 2: Convert to fraction form
638,012.81/880,496.87 = 351,532.82/x - Step 3: Cross multiply
638,012.81x = 880,496.87 × 351,532.82 - Step 4: Simplify right side
638,012.81x = 309,523,541,552.13 - Step 5: Solve for x
x = 309,523,541,552.13/638,012.81 - Step 6: Final answer
x = 485,136.88
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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.