Finding the Fourth Proportional to 1,268,919.18, 1,902,618.44 and 403,980.30
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Solution
The fourth proportional to 1,268,919.18, 1,902,618.44 and 403,980.30 is: 605,728.39
Step by Step Solution
- Step 1: Write the proportion equation
1,268,919.18 : 1,902,618.44 = 403,980.30 : x - Step 2: Convert to fraction form
1,268,919.18/1,902,618.44 = 403,980.30/x - Step 3: Cross multiply
1,268,919.18x = 1,902,618.44 × 403,980.30 - Step 4: Simplify right side
1,268,919.18x = 768,620,368,176.73 - Step 5: Solve for x
x = 768,620,368,176.73/1,268,919.18 - Step 6: Final answer
x = 605,728.39
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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.