Finding the Fourth Proportional to 680,765.66, 939,042.14 and 419,163.06
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Solution
The fourth proportional to 680,765.66, 939,042.14 and 419,163.06 is: 578,189.82
Step by Step Solution
- Step 1: Write the proportion equation
680,765.66 : 939,042.14 = 419,163.06 : x - Step 2: Convert to fraction form
680,765.66/939,042.14 = 419,163.06/x - Step 3: Cross multiply
680,765.66x = 939,042.14 × 419,163.06 - Step 4: Simplify right side
680,765.66x = 393,611,774,775.53 - Step 5: Solve for x
x = 393,611,774,775.53/680,765.66 - Step 6: Final answer
x = 578,189.82
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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.