Finding the Fourth Proportional to 472,393,811.20, 708,590,716.80 and 324,440,636.80
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Solution
The fourth proportional to 472,393,811.20, 708,590,716.80 and 324,440,636.80 is: 486,660,955.20
Step by Step Solution
- Step 1: Write the proportion equation
472,393,811.20 : 708,590,716.80 = 324,440,636.80 : x - Step 2: Convert to fraction form
472,393,811.20/708,590,716.80 = 324,440,636.80/x - Step 3: Cross multiply
472,393,811.20x = 708,590,716.80 × 324,440,636.80 - Step 4: Simplify right side
472,393,811.20x = 229,895,623,389,160,448 - Step 5: Solve for x
x = 229,895,623,389,160,448/472,393,811.20 - Step 6: Final answer
x = 486,660,955.20
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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.