Finding the Fourth Proportional to 674,431.79, 930,688.25 and 368,518.68
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Solution
The fourth proportional to 674,431.79, 930,688.25 and 368,518.68 is: 508,540.69
Step by Step Solution
- Step 1: Write the proportion equation
674,431.79 : 930,688.25 = 368,518.68 : x - Step 2: Convert to fraction form
674,431.79/930,688.25 = 368,518.68/x - Step 3: Cross multiply
674,431.79x = 930,688.25 × 368,518.68 - Step 4: Simplify right side
674,431.79x = 342,976,003,538.92 - Step 5: Solve for x
x = 342,976,003,538.92/674,431.79 - Step 6: Final answer
x = 508,540.69
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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.