Finding the Fourth Proportional to 590,805.84, 815,405.64 and 375,721.68
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Solution
The fourth proportional to 590,805.84, 815,405.64 and 375,721.68 is: 518,555.43
Step by Step Solution
- Step 1: Write the proportion equation
590,805.84 : 815,405.64 = 375,721.68 : x - Step 2: Convert to fraction form
590,805.84/815,405.64 = 375,721.68/x - Step 3: Cross multiply
590,805.84x = 815,405.64 × 375,721.68 - Step 4: Simplify right side
590,805.84x = 306,365,576,942.28 - Step 5: Solve for x
x = 306,365,576,942.28/590,805.84 - Step 6: Final answer
x = 518,555.43
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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.