Finding the Fourth Proportional to 859,765.22, 1,186,381.80 and 497,134.21
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Solution
The fourth proportional to 859,765.22, 1,186,381.80 and 497,134.21 is: 685,990.74
Step by Step Solution
- Step 1: Write the proportion equation
859,765.22 : 1,186,381.80 = 497,134.21 : x - Step 2: Convert to fraction form
859,765.22/1,186,381.80 = 497,134.21/x - Step 3: Cross multiply
859,765.22x = 1,186,381.80 × 497,134.21 - Step 4: Simplify right side
859,765.22x = 589,790,978,901.38 - Step 5: Solve for x
x = 589,790,978,901.38/859,765.22 - Step 6: Final answer
x = 685,990.74
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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.