Finding the Fourth Proportional to 920,270.64, 1,380,545.28 and 289,125.12
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Solution
The fourth proportional to 920,270.64, 1,380,545.28 and 289,125.12 is: 433,731.45
Step by Step Solution
- Step 1: Write the proportion equation
920,270.64 : 1,380,545.28 = 289,125.12 : x - Step 2: Convert to fraction form
920,270.64/1,380,545.28 = 289,125.12/x - Step 3: Cross multiply
920,270.64x = 1,380,545.28 × 289,125.12 - Step 4: Simplify right side
920,270.64x = 399,150,319,745.43 - Step 5: Solve for x
x = 399,150,319,745.43/920,270.64 - Step 6: Final answer
x = 433,731.45
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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.