Finding the Fourth Proportional to 711,375,202.19, 981,676,694.75 and 393,849,599.78
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Solution
The fourth proportional to 711,375,202.19, 981,676,694.75 and 393,849,599.78 is: 543,500,774.48
Step by Step Solution
- Step 1: Write the proportion equation
711,375,202.19 : 981,676,694.75 = 393,849,599.78 : x - Step 2: Convert to fraction form
711,375,202.19/981,676,694.75 = 393,849,599.78/x - Step 3: Cross multiply
711,375,202.19x = 981,676,694.75 × 393,849,599.78 - Step 4: Simplify right side
711,375,202.19x = 386,632,973,333,763,072 - Step 5: Solve for x
x = 386,632,973,333,763,072/711,375,202.19 - Step 6: Final answer
x = 543,500,774.48
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.