Finding the Fourth Proportional to 518,936.76, 716,136.93 and 289,486.44
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Solution
The fourth proportional to 518,936.76, 716,136.93 and 289,486.44 is: 399,493.63
Step by Step Solution
- Step 1: Write the proportion equation
518,936.76 : 716,136.93 = 289,486.44 : x - Step 2: Convert to fraction form
518,936.76/716,136.93 = 289,486.44/x - Step 3: Cross multiply
518,936.76x = 716,136.93 × 289,486.44 - Step 4: Simplify right side
518,936.76x = 207,311,930,418.23 - Step 5: Solve for x
x = 207,311,930,418.23/518,936.76 - Step 6: Final answer
x = 399,493.63
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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.