Finding the Fourth Proportional to 4,261,389.20, 6,396,020.40 and 2,133,000.80
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Solution
The fourth proportional to 4,261,389.20, 6,396,020.40 and 2,133,000.80 is: 3,201,471.63
Step by Step Solution
- Step 1: Write the proportion equation
4,261,389.20 : 6,396,020.40 = 2,133,000.80 : x - Step 2: Convert to fraction form
4,261,389.20/6,396,020.40 = 2,133,000.80/x - Step 3: Cross multiply
4,261,389.20x = 6,396,020.40 × 2,133,000.80 - Step 4: Simplify right side
4,261,389.20x = 13,642,716,630,016.32 - Step 5: Solve for x
x = 13,642,716,630,016.32/4,261,389.20 - Step 6: Final answer
x = 3,201,471.63
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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.