Finding the Fourth Proportional to 431,193,397.29, 646,531,522.93 and 197,731,643.99
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Solution
The fourth proportional to 431,193,397.29, 646,531,522.93 and 197,731,643.99 is: 296,478,892.59
Step by Step Solution
- Step 1: Write the proportion equation
431,193,397.29 : 646,531,522.93 = 197,731,643.99 : x - Step 2: Convert to fraction form
431,193,397.29/646,531,522.93 = 197,731,643.99/x - Step 3: Cross multiply
431,193,397.29x = 646,531,522.93 × 197,731,643.99 - Step 4: Simplify right side
431,193,397.29x = 127,839,740,919,318,624 - Step 5: Solve for x
x = 127,839,740,919,318,624/431,193,397.29 - Step 6: Final answer
x = 296,478,892.59
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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.