Finding the Fourth Proportional to 7,142,929.68, 9,857,315.36 and 3,879,808.24
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Solution
The fourth proportional to 7,142,929.68, 9,857,315.36 and 3,879,808.24 is: 5,354,174.70
Step by Step Solution
- Step 1: Write the proportion equation
7,142,929.68 : 9,857,315.36 = 3,879,808.24 : x - Step 2: Convert to fraction form
7,142,929.68/9,857,315.36 = 3,879,808.24/x - Step 3: Cross multiply
7,142,929.68x = 9,857,315.36 × 3,879,808.24 - Step 4: Simplify right side
7,142,929.68x = 38,244,493,358,006.56 - Step 5: Solve for x
x = 38,244,493,358,006.56/7,142,929.68 - Step 6: Final answer
x = 5,354,174.70
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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.