Finding the Fourth Proportional to 898,320,861.40, 1,347,481,292.10 and 766,806,928.60
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Solution
The fourth proportional to 898,320,861.40, 1,347,481,292.10 and 766,806,928.60 is: 1,150,210,392.90
Step by Step Solution
- Step 1: Write the proportion equation
898,320,861.40 : 1,347,481,292.10 = 766,806,928.60 : x - Step 2: Convert to fraction form
898,320,861.40/1,347,481,292.10 = 766,806,928.60/x - Step 3: Cross multiply
898,320,861.40x = 1,347,481,292.10 × 766,806,928.60 - Step 4: Simplify right side
898,320,861.40x = 1,033,257,990,941,160,448 - Step 5: Solve for x
x = 1,033,257,990,941,160,448/898,320,861.40 - Step 6: Final answer
x = 1,150,210,392.90
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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.