Finding the Fourth Proportional to 618,425.40, 927,638.10 and 197,743.80
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Solution
The fourth proportional to 618,425.40, 927,638.10 and 197,743.80 is: 296,615.70
Step by Step Solution
- Step 1: Write the proportion equation
618,425.40 : 927,638.10 = 197,743.80 : x - Step 2: Convert to fraction form
618,425.40/927,638.10 = 197,743.80/x - Step 3: Cross multiply
618,425.40x = 927,638.10 × 197,743.80 - Step 4: Simplify right side
618,425.40x = 183,434,682,918.78 - Step 5: Solve for x
x = 183,434,682,918.78/618,425.40 - Step 6: Final answer
x = 296,615.70
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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.