Finding the Fourth Proportional to 4,378,005.20, 6,561,478.20 and 2,129,301.20
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Solution
The fourth proportional to 4,378,005.20, 6,561,478.20 and 2,129,301.20 is: 3,191,262.41
Step by Step Solution
- Step 1: Write the proportion equation
4,378,005.20 : 6,561,478.20 = 2,129,301.20 : x - Step 2: Convert to fraction form
4,378,005.20/6,561,478.20 = 2,129,301.20/x - Step 3: Cross multiply
4,378,005.20x = 6,561,478.20 × 2,129,301.20 - Step 4: Simplify right side
4,378,005.20x = 13,971,363,405,033.84 - Step 5: Solve for x
x = 13,971,363,405,033.84/4,378,005.20 - Step 6: Final answer
x = 3,191,262.41
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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.