Finding the Fourth Proportional to 7,480,409.20, 11,192,620.20 and 4,960,985.20
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Solution
The fourth proportional to 7,480,409.20, 11,192,620.20 and 4,960,985.20 is: 7,422,912.53
Step by Step Solution
- Step 1: Write the proportion equation
7,480,409.20 : 11,192,620.20 = 4,960,985.20 : x - Step 2: Convert to fraction form
7,480,409.20/11,192,620.20 = 4,960,985.20/x - Step 3: Cross multiply
7,480,409.20x = 11,192,620.20 × 4,960,985.20 - Step 4: Simplify right side
7,480,409.20x = 55,526,423,161,421.04 - Step 5: Solve for x
x = 55,526,423,161,421.04/7,480,409.20 - Step 6: Final answer
x = 7,422,912.53
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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.