Finding the Fourth Proportional to 431,325.80, 646,988.70 and 305,354.60
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Solution
The fourth proportional to 431,325.80, 646,988.70 and 305,354.60 is: 458,031.90
Step by Step Solution
- Step 1: Write the proportion equation
431,325.80 : 646,988.70 = 305,354.60 : x - Step 2: Convert to fraction form
431,325.80/646,988.70 = 305,354.60/x - Step 3: Cross multiply
431,325.80x = 646,988.70 × 305,354.60 - Step 4: Simplify right side
431,325.80x = 197,560,975,693.02 - Step 5: Solve for x
x = 197,560,975,693.02/431,325.80 - Step 6: Final answer
x = 458,031.90
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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.