Finding the Fourth Proportional to 612,194.80, 918,292.20 and 413,129.20
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Solution
The fourth proportional to 612,194.80, 918,292.20 and 413,129.20 is: 619,693.80
Step by Step Solution
- Step 1: Write the proportion equation
612,194.80 : 918,292.20 = 413,129.20 : x - Step 2: Convert to fraction form
612,194.80/918,292.20 = 413,129.20/x - Step 3: Cross multiply
612,194.80x = 918,292.20 × 413,129.20 - Step 4: Simplify right side
612,194.80x = 379,373,321,952.24 - Step 5: Solve for x
x = 379,373,321,952.24/612,194.80 - Step 6: Final answer
x = 619,693.80
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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.