Finding the Fourth Proportional to 681,125.10, 1,021,687.65 and 207,809.70
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Solution
The fourth proportional to 681,125.10, 1,021,687.65 and 207,809.70 is: 311,714.55
Step by Step Solution
- Step 1: Write the proportion equation
681,125.10 : 1,021,687.65 = 207,809.70 : x - Step 2: Convert to fraction form
681,125.10/1,021,687.65 = 207,809.70/x - Step 3: Cross multiply
681,125.10x = 1,021,687.65 × 207,809.70 - Step 4: Simplify right side
681,125.10x = 212,316,604,040.21 - Step 5: Solve for x
x = 212,316,604,040.21/681,125.10 - Step 6: Final answer
x = 311,714.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.