Finding the Fourth Proportional to 679,493.17, 1,019,239.97 and 199,721.06
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Solution
The fourth proportional to 679,493.17, 1,019,239.97 and 199,721.06 is: 299,581.65
Step by Step Solution
- Step 1: Write the proportion equation
679,493.17 : 1,019,239.97 = 199,721.06 : x - Step 2: Convert to fraction form
679,493.17/1,019,239.97 = 199,721.06/x - Step 3: Cross multiply
679,493.17x = 1,019,239.97 × 199,721.06 - Step 4: Simplify right side
679,493.17x = 203,563,681,107.96 - Step 5: Solve for x
x = 203,563,681,107.96/679,493.17 - Step 6: Final answer
x = 299,581.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.