Finding the Fourth Proportional to 709,415.62, 979,014.20 and 387,146.44
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Solution
The fourth proportional to 709,415.62, 979,014.20 and 387,146.44 is: 534,273.35
Step by Step Solution
- Step 1: Write the proportion equation
709,415.62 : 979,014.20 = 387,146.44 : x - Step 2: Convert to fraction form
709,415.62/979,014.20 = 387,146.44/x - Step 3: Cross multiply
709,415.62x = 979,014.20 × 387,146.44 - Step 4: Simplify right side
709,415.62x = 379,021,856,020.53 - Step 5: Solve for x
x = 379,021,856,020.53/709,415.62 - Step 6: Final answer
x = 534,273.35
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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.