Finding the Fourth Proportional to 680,205.63, 938,684.67 and 378,399.63
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Solution
The fourth proportional to 680,205.63, 938,684.67 and 378,399.63 is: 522,191.99
Step by Step Solution
- Step 1: Write the proportion equation
680,205.63 : 938,684.67 = 378,399.63 : x - Step 2: Convert to fraction form
680,205.63/938,684.67 = 378,399.63/x - Step 3: Cross multiply
680,205.63x = 938,684.67 × 378,399.63 - Step 4: Simplify right side
680,205.63x = 355,197,931,814.67 - Step 5: Solve for x
x = 355,197,931,814.67/680,205.63 - Step 6: Final answer
x = 522,191.99
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1.5x scale
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.