Finding the Fourth Proportional to 1,241,185,296.80, 1,861,777,945.20 and 423,324,279.20
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Solution
The fourth proportional to 1,241,185,296.80, 1,861,777,945.20 and 423,324,279.20 is: 634,986,418.80
Step by Step Solution
- Step 1: Write the proportion equation
1,241,185,296.80 : 1,861,777,945.20 = 423,324,279.20 : x - Step 2: Convert to fraction form
1,241,185,296.80/1,861,777,945.20 = 423,324,279.20/x - Step 3: Cross multiply
1,241,185,296.80x = 1,861,777,945.20 × 423,324,279.20 - Step 4: Simplify right side
1,241,185,296.80x = 788,135,806,682,247,040 - Step 5: Solve for x
x = 788,135,806,682,247,040/1,241,185,296.80 - Step 6: Final answer
x = 634,986,418.80
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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.