Finding the Fourth Proportional to 519,783.36, 718,003.11 and 391,690.09
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Solution
The fourth proportional to 519,783.36, 718,003.11 and 391,690.09 is: 541,061.37
Step by Step Solution
- Step 1: Write the proportion equation
519,783.36 : 718,003.11 = 391,690.09 : x - Step 2: Convert to fraction form
519,783.36/718,003.11 = 391,690.09/x - Step 3: Cross multiply
519,783.36x = 718,003.11 × 391,690.09 - Step 4: Simplify right side
519,783.36x = 281,234,699,022.72 - Step 5: Solve for x
x = 281,234,699,022.72/519,783.36 - Step 6: Final answer
x = 541,061.37
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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.