Finding the Fourth Proportional to 609,217.22, 912,785.79 and 431,428.70
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Solution
The fourth proportional to 609,217.22, 912,785.79 and 431,428.70 is: 646,406.53
Step by Step Solution
- Step 1: Write the proportion equation
609,217.22 : 912,785.79 = 431,428.70 : x - Step 2: Convert to fraction form
609,217.22/912,785.79 = 431,428.70/x - Step 3: Cross multiply
609,217.22x = 912,785.79 × 431,428.70 - Step 4: Simplify right side
609,217.22x = 393,801,986,758.17 - Step 5: Solve for x
x = 393,801,986,758.17/609,217.22 - Step 6: Final answer
x = 646,406.53
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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.