Finding the Fourth Proportional to 1,918,631.39, 2,647,641.93 and 1,059,173.19
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Solution
The fourth proportional to 1,918,631.39, 2,647,641.93 and 1,059,173.19 is: 1,461,620.70
Step by Step Solution
- Step 1: Write the proportion equation
1,918,631.39 : 2,647,641.93 = 1,059,173.19 : x - Step 2: Convert to fraction form
1,918,631.39/2,647,641.93 = 1,059,173.19/x - Step 3: Cross multiply
1,918,631.39x = 2,647,641.93 × 1,059,173.19 - Step 4: Simplify right side
1,918,631.39x = 2,804,311,345,003.96 - Step 5: Solve for x
x = 2,804,311,345,003.96/1,918,631.39 - Step 6: Final answer
x = 1,461,620.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.