Finding the Fourth Proportional to 431,374,138.60, 647,061,207.90 and 201,366,473.80
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Solution
The fourth proportional to 431,374,138.60, 647,061,207.90 and 201,366,473.80 is: 302,049,710.70
Step by Step Solution
- Step 1: Write the proportion equation
431,374,138.60 : 647,061,207.90 = 201,366,473.80 : x - Step 2: Convert to fraction form
431,374,138.60/647,061,207.90 = 201,366,473.80/x - Step 3: Cross multiply
431,374,138.60x = 647,061,207.90 × 201,366,473.80 - Step 4: Simplify right side
431,374,138.60x = 130,296,433,767,591,712 - Step 5: Solve for x
x = 130,296,433,767,591,712/431,374,138.60 - Step 6: Final answer
x = 302,049,710.70
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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.