Finding the Fourth Proportional to 811,197.18, 1,215,937.70 and 305,539.38
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Solution
The fourth proportional to 811,197.18, 1,215,937.70 and 305,539.38 is: 457,985.87
Step by Step Solution
- Step 1: Write the proportion equation
811,197.18 : 1,215,937.70 = 305,539.38 : x - Step 2: Convert to fraction form
811,197.18/1,215,937.70 = 305,539.38/x - Step 3: Cross multiply
811,197.18x = 1,215,937.70 × 305,539.38 - Step 4: Simplify right side
811,197.18x = 371,516,845,660.79 - Step 5: Solve for x
x = 371,516,845,660.79/811,197.18 - Step 6: Final answer
x = 457,985.87
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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.