Finding the Fourth Proportional to 5,317,685.78, 7,974,855.60 and 1,722,618.62
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Solution
The fourth proportional to 5,317,685.78, 7,974,855.60 and 1,722,618.62 is: 2,583,385.95
Step by Step Solution
- Step 1: Write the proportion equation
5,317,685.78 : 7,974,855.60 = 1,722,618.62 : x - Step 2: Convert to fraction form
5,317,685.78/7,974,855.60 = 1,722,618.62/x - Step 3: Cross multiply
5,317,685.78x = 7,974,855.60 × 1,722,618.62 - Step 4: Simplify right side
5,317,685.78x = 13,737,634,748,371.27 - Step 5: Solve for x
x = 13,737,634,748,371.27/5,317,685.78 - Step 6: Final answer
x = 2,583,385.95
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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.