Finding the Fourth Proportional to 3,178,624.08, 4,386,556.05 and 1,728,329.31
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Solution
The fourth proportional to 3,178,624.08, 4,386,556.05 and 1,728,329.31 is: 2,385,124.26
Step by Step Solution
- Step 1: Write the proportion equation
3,178,624.08 : 4,386,556.05 = 1,728,329.31 : x - Step 2: Convert to fraction form
3,178,624.08/4,386,556.05 = 1,728,329.31/x - Step 3: Cross multiply
3,178,624.08x = 4,386,556.05 × 1,728,329.31 - Step 4: Simplify right side
3,178,624.08x = 7,581,413,391,172.83 - Step 5: Solve for x
x = 7,581,413,391,172.83/3,178,624.08 - Step 6: Final answer
x = 2,385,124.26
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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.