Finding the Fourth Proportional to 5,181,728.43, 7,149,499.68 and 3,415,431.03
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Solution
The fourth proportional to 5,181,728.43, 7,149,499.68 and 3,415,431.03 is: 4,712,447.47
Step by Step Solution
- Step 1: Write the proportion equation
5,181,728.43 : 7,149,499.68 = 3,415,431.03 : x - Step 2: Convert to fraction form
5,181,728.43/7,149,499.68 = 3,415,431.03/x - Step 3: Cross multiply
5,181,728.43x = 7,149,499.68 × 3,415,431.03 - Step 4: Simplify right side
5,181,728.43x = 24,418,623,056,047.07 - Step 5: Solve for x
x = 24,418,623,056,047.07/5,181,728.43 - Step 6: Final answer
x = 4,712,447.47
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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.