Finding the Fourth Proportional to 489,128.14, 674,710.86 and 307,552.60
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Solution
The fourth proportional to 489,128.14, 674,710.86 and 307,552.60 is: 424,242.77
Step by Step Solution
- Step 1: Write the proportion equation
489,128.14 : 674,710.86 = 307,552.60 : x - Step 2: Convert to fraction form
489,128.14/674,710.86 = 307,552.60/x - Step 3: Cross multiply
489,128.14x = 674,710.86 × 307,552.60 - Step 4: Simplify right side
489,128.14x = 207,509,079,241.24 - Step 5: Solve for x
x = 207,509,079,241.24/489,128.14 - Step 6: Final answer
x = 424,242.77
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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.