Finding the Fourth Proportional to 939,256.19, 1,295,373.43 and 721,990.75
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Solution
The fourth proportional to 939,256.19, 1,295,373.43 and 721,990.75 is: 995,732.20
Step by Step Solution
- Step 1: Write the proportion equation
939,256.19 : 1,295,373.43 = 721,990.75 : x - Step 2: Convert to fraction form
939,256.19/1,295,373.43 = 721,990.75/x - Step 3: Cross multiply
939,256.19x = 1,295,373.43 × 721,990.75 - Step 4: Simplify right side
939,256.19x = 935,247,632,668.88 - Step 5: Solve for x
x = 935,247,632,668.88/939,256.19 - Step 6: Final answer
x = 995,732.20
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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.