Finding the Fourth Proportional to 407,876,138.40, 611,814,207.60 and 343,306,056.90
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Solution
The fourth proportional to 407,876,138.40, 611,814,207.60 and 343,306,056.90 is: 514,959,085.35
Step by Step Solution
- Step 1: Write the proportion equation
407,876,138.40 : 611,814,207.60 = 343,306,056.90 : x - Step 2: Convert to fraction form
407,876,138.40/611,814,207.60 = 343,306,056.90/x - Step 3: Cross multiply
407,876,138.40x = 611,814,207.60 × 343,306,056.90 - Step 4: Simplify right side
407,876,138.40x = 210,039,523,166,554,016 - Step 5: Solve for x
x = 210,039,523,166,554,016/407,876,138.40 - Step 6: Final answer
x = 514,959,085.35
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.