Finding the Fourth Proportional to 5,378,405.85, 7,421,984.19 and 2,930,964.93
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Solution
The fourth proportional to 5,378,405.85, 7,421,984.19 and 2,930,964.93 is: 4,044,613.96
Step by Step Solution
- Step 1: Write the proportion equation
5,378,405.85 : 7,421,984.19 = 2,930,964.93 : x - Step 2: Convert to fraction form
5,378,405.85/7,421,984.19 = 2,930,964.93/x - Step 3: Cross multiply
5,378,405.85x = 7,421,984.19 × 2,930,964.93 - Step 4: Simplify right side
5,378,405.85x = 21,753,575,371,904.46 - Step 5: Solve for x
x = 21,753,575,371,904.46/5,378,405.85 - Step 6: Final answer
x = 4,044,613.96
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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.