Finding the Fourth Proportional to 667,756.90, 921,823.70 and 381,221.63
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Solution
The fourth proportional to 667,756.90, 921,823.70 and 381,221.63 is: 526,268.07
Step by Step Solution
- Step 1: Write the proportion equation
667,756.90 : 921,823.70 = 381,221.63 : x - Step 2: Convert to fraction form
667,756.90/921,823.70 = 381,221.63/x - Step 3: Cross multiply
667,756.90x = 921,823.70 × 381,221.63 - Step 4: Simplify right side
667,756.90x = 351,419,133,486.63 - Step 5: Solve for x
x = 351,419,133,486.63/667,756.90 - Step 6: Final answer
x = 526,268.07
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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.