Finding the Fourth Proportional to 611,571.60, 917,794.80 and 256,840.20
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Solution
The fourth proportional to 611,571.60, 917,794.80 and 256,840.20 is: 385,443.99
Step by Step Solution
- Step 1: Write the proportion equation
611,571.60 : 917,794.80 = 256,840.20 : x - Step 2: Convert to fraction form
611,571.60/917,794.80 = 256,840.20/x - Step 3: Cross multiply
611,571.60x = 917,794.80 × 256,840.20 - Step 4: Simplify right side
611,571.60x = 235,726,599,990.96 - Step 5: Solve for x
x = 235,726,599,990.96/611,571.60 - Step 6: Final answer
x = 385,443.99
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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.