Finding the Fourth Proportional to 431,193,397.79, 646,531,523.68 and 197,731,644.49
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Solution
The fourth proportional to 431,193,397.79, 646,531,523.68 and 197,731,644.49 is: 296,478,893.34
Step by Step Solution
- Step 1: Write the proportion equation
431,193,397.79 : 646,531,523.68 = 197,731,644.49 : x - Step 2: Convert to fraction form
431,193,397.79/646,531,523.68 = 197,731,644.49/x - Step 3: Cross multiply
431,193,397.79x = 646,531,523.68 × 197,731,644.49 - Step 4: Simplify right side
431,193,397.79x = 127,839,741,391,871,776 - Step 5: Solve for x
x = 127,839,741,391,871,776/431,193,397.79 - Step 6: Final answer
x = 296,478,893.34
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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.