Finding the Fourth Proportional to 407,742.18, 612,610.14 and 385,081.62
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Solution
The fourth proportional to 407,742.18, 612,610.14 and 385,081.62 is: 578,563.90
Step by Step Solution
- Step 1: Write the proportion equation
407,742.18 : 612,610.14 = 385,081.62 : x - Step 2: Convert to fraction form
407,742.18/612,610.14 = 385,081.62/x - Step 3: Cross multiply
407,742.18x = 612,610.14 × 385,081.62 - Step 4: Simplify right side
407,742.18x = 235,904,905,139.63 - Step 5: Solve for x
x = 235,904,905,139.63/407,742.18 - Step 6: Final answer
x = 578,563.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.