Finding the Fourth Proportional to 386,696.67, 580,045.05 and 120,478.65
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Solution
The fourth proportional to 386,696.67, 580,045.05 and 120,478.65 is: 180,717.99
Step by Step Solution
- Step 1: Write the proportion equation
386,696.67 : 580,045.05 = 120,478.65 : x - Step 2: Convert to fraction form
386,696.67/580,045.05 = 120,478.65/x - Step 3: Cross multiply
386,696.67x = 580,045.05 × 120,478.65 - Step 4: Simplify right side
386,696.67x = 69,883,044,563.18 - Step 5: Solve for x
x = 69,883,044,563.18/386,696.67 - Step 6: Final answer
x = 180,717.99
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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.