Finding the Fourth Proportional to 821,770.21, 1,134,021.12 and 459,197.05
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Solution
The fourth proportional to 821,770.21, 1,134,021.12 and 459,197.05 is: 633,679.76
Step by Step Solution
- Step 1: Write the proportion equation
821,770.21 : 1,134,021.12 = 459,197.05 : x - Step 2: Convert to fraction form
821,770.21/1,134,021.12 = 459,197.05/x - Step 3: Cross multiply
821,770.21x = 1,134,021.12 × 459,197.05 - Step 4: Simplify right side
821,770.21x = 520,739,152,941.70 - Step 5: Solve for x
x = 520,739,152,941.70/821,770.21 - Step 6: Final answer
x = 633,679.76
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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.