Finding the Fourth Proportional to 665,359.86, 918,195.70 and 378,879.94
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Solution
The fourth proportional to 665,359.86, 918,195.70 and 378,879.94 is: 522,853.80
Step by Step Solution
- Step 1: Write the proportion equation
665,359.86 : 918,195.70 = 378,879.94 : x - Step 2: Convert to fraction form
665,359.86/918,195.70 = 378,879.94/x - Step 3: Cross multiply
665,359.86x = 918,195.70 × 378,879.94 - Step 4: Simplify right side
665,359.86x = 347,885,931,724.26 - Step 5: Solve for x
x = 347,885,931,724.26/665,359.86 - Step 6: Final answer
x = 522,853.80
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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.