Finding the Fourth Proportional to 472,467.12, 708,000.56 and 388,821.68
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Solution
The fourth proportional to 472,467.12, 708,000.56 and 388,821.68 is: 582,656.35
Step by Step Solution
- Step 1: Write the proportion equation
472,467.12 : 708,000.56 = 388,821.68 : x - Step 2: Convert to fraction form
472,467.12/708,000.56 = 388,821.68/x - Step 3: Cross multiply
472,467.12x = 708,000.56 × 388,821.68 - Step 4: Simplify right side
472,467.12x = 275,285,967,180.14 - Step 5: Solve for x
x = 275,285,967,180.14/472,467.12 - Step 6: Final answer
x = 582,656.35
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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.