Finding the Fourth Proportional to 488,433.12, 674,044.44 and 318,569.76
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Solution
The fourth proportional to 488,433.12, 674,044.44 and 318,569.76 is: 439,630.66
Step by Step Solution
- Step 1: Write the proportion equation
488,433.12 : 674,044.44 = 318,569.76 : x - Step 2: Convert to fraction form
488,433.12/674,044.44 = 318,569.76/x - Step 3: Cross multiply
488,433.12x = 674,044.44 × 318,569.76 - Step 4: Simplify right side
488,433.12x = 214,730,175,480.13 - Step 5: Solve for x
x = 214,730,175,480.13/488,433.12 - Step 6: Final answer
x = 439,630.66
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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.