Finding the Fourth Proportional to 657,117.20, 985,129.05 and 278,328.80
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Solution
The fourth proportional to 657,117.20, 985,129.05 and 278,328.80 is: 417,261.62
Step by Step Solution
- Step 1: Write the proportion equation
657,117.20 : 985,129.05 = 278,328.80 : x - Step 2: Convert to fraction form
657,117.20/985,129.05 = 278,328.80/x - Step 3: Cross multiply
657,117.20x = 985,129.05 × 278,328.80 - Step 4: Simplify right side
657,117.20x = 274,189,786,331.64 - Step 5: Solve for x
x = 274,189,786,331.64/657,117.20 - Step 6: Final answer
x = 417,261.62
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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.