Finding the Fourth Proportional to 791,377.42, 1,092,121.18 and 485,622.75
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Solution
The fourth proportional to 791,377.42, 1,092,121.18 and 485,622.75 is: 670,171.87
Step by Step Solution
- Step 1: Write the proportion equation
791,377.42 : 1,092,121.18 = 485,622.75 : x - Step 2: Convert to fraction form
791,377.42/1,092,121.18 = 485,622.75/x - Step 3: Cross multiply
791,377.42x = 1,092,121.18 × 485,622.75 - Step 4: Simplify right side
791,377.42x = 530,358,884,090.18 - Step 5: Solve for x
x = 530,358,884,090.18/791,377.42 - Step 6: Final answer
x = 670,171.87
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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.