Finding the Fourth Proportional to 718,721.21, 992,161.55 and 512,122.97
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Solution
The fourth proportional to 718,721.21, 992,161.55 and 512,122.97 is: 706,962.19
Step by Step Solution
- Step 1: Write the proportion equation
718,721.21 : 992,161.55 = 512,122.97 : x - Step 2: Convert to fraction form
718,721.21/992,161.55 = 512,122.97/x - Step 3: Cross multiply
718,721.21x = 992,161.55 × 512,122.97 - Step 4: Simplify right side
718,721.21x = 508,108,717,145.19 - Step 5: Solve for x
x = 508,108,717,145.19/718,721.21 - Step 6: Final answer
x = 706,962.19
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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.