Finding the Fourth Proportional to 438,235.40, 600,379.67 and 421,847.76
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Solution
The fourth proportional to 438,235.40, 600,379.67 and 421,847.76 is: 577,928.70
Step by Step Solution
- Step 1: Write the proportion equation
438,235.40 : 600,379.67 = 421,847.76 : x - Step 2: Convert to fraction form
438,235.40/600,379.67 = 421,847.76/x - Step 3: Cross multiply
438,235.40x = 600,379.67 × 421,847.76 - Step 4: Simplify right side
438,235.40x = 253,268,816,495.05 - Step 5: Solve for x
x = 253,268,816,495.05/438,235.40 - Step 6: Final answer
x = 577,928.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.