Finding the Fourth Proportional to 6,467,243.20, 9,702,247.20 and 1,979,972.80
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Solution
The fourth proportional to 6,467,243.20, 9,702,247.20 and 1,979,972.80 is: 2,970,382.43
Step by Step Solution
- Step 1: Write the proportion equation
6,467,243.20 : 9,702,247.20 = 1,979,972.80 : x - Step 2: Convert to fraction form
6,467,243.20/9,702,247.20 = 1,979,972.80/x - Step 3: Cross multiply
6,467,243.20x = 9,702,247.20 × 1,979,972.80 - Step 4: Simplify right side
6,467,243.20x = 19,210,185,554,876.16 - Step 5: Solve for x
x = 19,210,185,554,876.16/6,467,243.20 - Step 6: Final answer
x = 2,970,382.43
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1.5x scale
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.