Finding the Fourth Proportional to 4,172,620.80, 6,263,078.40 and 2,045,107.20
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Solution
The fourth proportional to 4,172,620.80, 6,263,078.40 and 2,045,107.20 is: 3,069,693.45
Step by Step Solution
- Step 1: Write the proportion equation
4,172,620.80 : 6,263,078.40 = 2,045,107.20 : x - Step 2: Convert to fraction form
4,172,620.80/6,263,078.40 = 2,045,107.20/x - Step 3: Cross multiply
4,172,620.80x = 6,263,078.40 × 2,045,107.20 - Step 4: Simplify right side
4,172,620.80x = 12,808,666,730,004.48 - Step 5: Solve for x
x = 12,808,666,730,004.48/4,172,620.80 - Step 6: Final answer
x = 3,069,693.45
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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.