Finding the Fourth Proportional to 852,192,643.20, 1,278,288,964.80 and 818,749,622.40
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Solution
The fourth proportional to 852,192,643.20, 1,278,288,964.80 and 818,749,622.40 is: 1,228,124,433.60
Step by Step Solution
- Step 1: Write the proportion equation
852,192,643.20 : 1,278,288,964.80 = 818,749,622.40 : x - Step 2: Convert to fraction form
852,192,643.20/1,278,288,964.80 = 818,749,622.40/x - Step 3: Cross multiply
852,192,643.20x = 1,278,288,964.80 × 818,749,622.40 - Step 4: Simplify right side
852,192,643.20x = 1,046,598,607,248,086,784 - Step 5: Solve for x
x = 1,046,598,607,248,086,784/852,192,643.20 - Step 6: Final answer
x = 1,228,124,433.60
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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.