Finding the Fourth Proportional to 814,132.68, 1,122,204.96 and 641,769.56
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Solution
The fourth proportional to 814,132.68, 1,122,204.96 and 641,769.56 is: 884,618.69
Step by Step Solution
- Step 1: Write the proportion equation
814,132.68 : 1,122,204.96 = 641,769.56 : x - Step 2: Convert to fraction form
814,132.68/1,122,204.96 = 641,769.56/x - Step 3: Cross multiply
814,132.68x = 1,122,204.96 × 641,769.56 - Step 4: Simplify right side
814,132.68x = 720,196,983,409.02 - Step 5: Solve for x
x = 720,196,983,409.02/814,132.68 - Step 6: Final answer
x = 884,618.69
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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.