Finding the Fourth Proportional to 1,515,544.80, 2,268,068.40 and 1,389,573.60
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Solution
The fourth proportional to 1,515,544.80, 2,268,068.40 and 1,389,573.60 is: 2,079,547.88
Step by Step Solution
- Step 1: Write the proportion equation
1,515,544.80 : 2,268,068.40 = 1,389,573.60 : x - Step 2: Convert to fraction form
1,515,544.80/2,268,068.40 = 1,389,573.60/x - Step 3: Cross multiply
1,515,544.80x = 2,268,068.40 × 1,389,573.60 - Step 4: Simplify right side
1,515,544.80x = 3,151,647,971,634.24 - Step 5: Solve for x
x = 3,151,647,971,634.24/1,515,544.80 - Step 6: Final answer
x = 2,079,547.88
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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.