Finding the Fourth Proportional to 5,418,829.80, 8,128,244.70 and 2,226,247.20
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Solution
The fourth proportional to 5,418,829.80, 8,128,244.70 and 2,226,247.20 is: 3,339,370.80
Step by Step Solution
- Step 1: Write the proportion equation
5,418,829.80 : 8,128,244.70 = 2,226,247.20 : x - Step 2: Convert to fraction form
5,418,829.80/8,128,244.70 = 2,226,247.20/x - Step 3: Cross multiply
5,418,829.80x = 8,128,244.70 × 2,226,247.20 - Step 4: Simplify right side
5,418,829.80x = 18,095,482,004,289.84 - Step 5: Solve for x
x = 18,095,482,004,289.84/5,418,829.80 - Step 6: Final answer
x = 3,339,370.80
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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.