Finding the Fourth Proportional to 739,343.20, 1,019,905.74 and 642,329.08
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Solution
The fourth proportional to 739,343.20, 1,019,905.74 and 642,329.08 is: 886,077.14
Step by Step Solution
- Step 1: Write the proportion equation
739,343.20 : 1,019,905.74 = 642,329.08 : x - Step 2: Convert to fraction form
739,343.20/1,019,905.74 = 642,329.08/x - Step 3: Cross multiply
739,343.20x = 1,019,905.74 × 642,329.08 - Step 4: Simplify right side
739,343.20x = 655,115,107,349.75 - Step 5: Solve for x
x = 655,115,107,349.75/739,343.20 - Step 6: Final answer
x = 886,077.14
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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.