Finding the Fourth Proportional to 318,966,955.80, 478,450,433.70 and 76,629,859.80
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Solution
The fourth proportional to 318,966,955.80, 478,450,433.70 and 76,629,859.80 is: 114,944,789.70
Step by Step Solution
- Step 1: Write the proportion equation
318,966,955.80 : 478,450,433.70 = 76,629,859.80 : x - Step 2: Convert to fraction form
318,966,955.80/478,450,433.70 = 76,629,859.80/x - Step 3: Cross multiply
318,966,955.80x = 478,450,433.70 × 76,629,859.80 - Step 4: Simplify right side
318,966,955.80x = 36,663,589,655,680,192 - Step 5: Solve for x
x = 36,663,589,655,680,192/318,966,955.80 - Step 6: Final answer
x = 114,944,789.70
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Similar ratio
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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.