Finding the Fourth Proportional to 489,113.44, 674,689.86 and 307,537.60
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Solution
The fourth proportional to 489,113.44, 674,689.86 and 307,537.60 is: 424,221.63
Step by Step Solution
- Step 1: Write the proportion equation
489,113.44 : 674,689.86 = 307,537.60 : x - Step 2: Convert to fraction form
489,113.44/674,689.86 = 307,537.60/x - Step 3: Cross multiply
489,113.44x = 674,689.86 × 307,537.60 - Step 4: Simplify right side
489,113.44x = 207,492,500,288.74 - Step 5: Solve for x
x = 207,492,500,288.74/489,113.44 - Step 6: Final answer
x = 424,221.63
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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.