Finding the Fourth Proportional to 427,174.62, 640,739.73 and 127,657.62
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Solution
The fourth proportional to 427,174.62, 640,739.73 and 127,657.62 is: 191,479.80
Step by Step Solution
- Step 1: Write the proportion equation
427,174.62 : 640,739.73 = 127,657.62 : x - Step 2: Convert to fraction form
427,174.62/640,739.73 = 127,657.62/x - Step 3: Cross multiply
427,174.62x = 640,739.73 × 127,657.62 - Step 4: Simplify right side
427,174.62x = 81,795,308,971.24 - Step 5: Solve for x
x = 81,795,308,971.24/427,174.62 - Step 6: Final answer
x = 191,479.80
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1.5x scale
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.