Finding the Fourth Proportional to 5,378,168.72, 7,421,777.64 and 2,930,801.68
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Solution
The fourth proportional to 5,378,168.72, 7,421,777.64 and 2,930,801.68 is: 4,044,454.44
Step by Step Solution
- Step 1: Write the proportion equation
5,378,168.72 : 7,421,777.64 = 2,930,801.68 : x - Step 2: Convert to fraction form
5,378,168.72/7,421,777.64 = 2,930,801.68/x - Step 3: Cross multiply
5,378,168.72x = 7,421,777.64 × 2,930,801.68 - Step 4: Simplify right side
5,378,168.72x = 21,751,758,375,898.43 - Step 5: Solve for x
x = 21,751,758,375,898.43/5,378,168.72 - Step 6: Final answer
x = 4,044,454.44
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.