Finding the Fourth Proportional to 431,193,396.79, 646,531,522.18 and 197,731,643.49
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Solution
The fourth proportional to 431,193,396.79, 646,531,522.18 and 197,731,643.49 is: 296,478,891.84
Step by Step Solution
- Step 1: Write the proportion equation
431,193,396.79 : 646,531,522.18 = 197,731,643.49 : x - Step 2: Convert to fraction form
431,193,396.79/646,531,522.18 = 197,731,643.49/x - Step 3: Cross multiply
431,193,396.79x = 646,531,522.18 × 197,731,643.49 - Step 4: Simplify right side
431,193,396.79x = 127,839,740,448,248,464 - Step 5: Solve for x
x = 127,839,740,448,248,464/431,193,396.79 - Step 6: Final answer
x = 296,478,891.84
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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.