Finding the Fourth Proportional to 849,408.96, 1,274,901.12 and 428,979.84
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Solution
The fourth proportional to 849,408.96, 1,274,901.12 and 428,979.84 is: 643,867.56
Step by Step Solution
- Step 1: Write the proportion equation
849,408.96 : 1,274,901.12 = 428,979.84 : x - Step 2: Convert to fraction form
849,408.96/1,274,901.12 = 428,979.84/x - Step 3: Cross multiply
849,408.96x = 1,274,901.12 × 428,979.84 - Step 4: Simplify right side
849,408.96x = 546,906,878,473.42 - Step 5: Solve for x
x = 546,906,878,473.42/849,408.96 - Step 6: Final answer
x = 643,867.56
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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.