Finding the Fourth Proportional to 527,431.68, 727,707.99 and 331,219.29
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Solution
The fourth proportional to 527,431.68, 727,707.99 and 331,219.29 is: 456,989.85
Step by Step Solution
- Step 1: Write the proportion equation
527,431.68 : 727,707.99 = 331,219.29 : x - Step 2: Convert to fraction form
527,431.68/727,707.99 = 331,219.29/x - Step 3: Cross multiply
527,431.68x = 727,707.99 × 331,219.29 - Step 4: Simplify right side
527,431.68x = 241,030,923,775.13 - Step 5: Solve for x
x = 241,030,923,775.13/527,431.68 - Step 6: Final answer
x = 456,989.85
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.