Finding the Fourth Proportional to 4,258,811.20, 6,388,216.80 and 1,266,995.20
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Solution
The fourth proportional to 4,258,811.20, 6,388,216.80 and 1,266,995.20 is: 1,900,492.80
Step by Step Solution
- Step 1: Write the proportion equation
4,258,811.20 : 6,388,216.80 = 1,266,995.20 : x - Step 2: Convert to fraction form
4,258,811.20/6,388,216.80 = 1,266,995.20/x - Step 3: Cross multiply
4,258,811.20x = 6,388,216.80 × 1,266,995.20 - Step 4: Simplify right side
4,258,811.20x = 8,093,840,022,159.36 - Step 5: Solve for x
x = 8,093,840,022,159.36/4,258,811.20 - Step 6: Final answer
x = 1,900,492.80
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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.