Finding the Fourth Proportional to 442,868,138.60, 664,302,207.90 and 440,317,221.80
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Solution
The fourth proportional to 442,868,138.60, 664,302,207.90 and 440,317,221.80 is: 660,475,832.70
Step by Step Solution
- Step 1: Write the proportion equation
442,868,138.60 : 664,302,207.90 = 440,317,221.80 : x - Step 2: Convert to fraction form
442,868,138.60/664,302,207.90 = 440,317,221.80/x - Step 3: Cross multiply
442,868,138.60x = 664,302,207.90 × 440,317,221.80 - Step 4: Simplify right side
442,868,138.60x = 292,503,702,618,134,016 - Step 5: Solve for x
x = 292,503,702,618,134,016/442,868,138.60 - Step 6: Final answer
x = 660,475,832.70
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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.