Finding the Fourth Proportional to 489,208.68, 674,821.26 and 307,632.60
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Solution
The fourth proportional to 489,208.68, 674,821.26 and 307,632.60 is: 424,352.69
Step by Step Solution
- Step 1: Write the proportion equation
489,208.68 : 674,821.26 = 307,632.60 : x - Step 2: Convert to fraction form
489,208.68/674,821.26 = 307,632.60/x - Step 3: Cross multiply
489,208.68x = 674,821.26 × 307,632.60 - Step 4: Simplify right side
489,208.68x = 207,597,018,749.08 - Step 5: Solve for x
x = 207,597,018,749.08/489,208.68 - Step 6: Final answer
x = 424,352.69
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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.