Finding the Fourth Proportional to 431,325.80, 646,988.70 and 431,325.80
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Solution
The fourth proportional to 431,325.80, 646,988.70 and 431,325.80 is: 646,988.70
Step by Step Solution
- Step 1: Write the proportion equation
431,325.80 : 646,988.70 = 431,325.80 : x - Step 2: Convert to fraction form
431,325.80/646,988.70 = 431,325.80/x - Step 3: Cross multiply
431,325.80x = 646,988.70 × 431,325.80 - Step 4: Simplify right side
431,325.80x = 279,062,918,618.46 - Step 5: Solve for x
x = 279,062,918,618.46/431,325.80 - Step 6: Final answer
x = 646,988.70
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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.