Finding the Fourth Proportional to 488,431.12, 674,041.68 and 318,567.76
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Solution
The fourth proportional to 488,431.12, 674,041.68 and 318,567.76 is: 439,627.90
Step by Step Solution
- Step 1: Write the proportion equation
488,431.12 : 674,041.68 = 318,567.76 : x - Step 2: Convert to fraction form
488,431.12/674,041.68 = 318,567.76/x - Step 3: Cross multiply
488,431.12x = 674,041.68 × 318,567.76 - Step 4: Simplify right side
488,431.12x = 214,727,948,144.24 - Step 5: Solve for x
x = 214,727,948,144.24/488,431.12 - Step 6: Final answer
x = 439,627.90
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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.