Finding the Fourth Proportional to 815,422.14, 1,125,845.50 and 509,635.96
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Solution
The fourth proportional to 815,422.14, 1,125,845.50 and 509,635.96 is: 703,649.47
Step by Step Solution
- Step 1: Write the proportion equation
815,422.14 : 1,125,845.50 = 509,635.96 : x - Step 2: Convert to fraction form
815,422.14/1,125,845.50 = 509,635.96/x - Step 3: Cross multiply
815,422.14x = 1,125,845.50 × 509,635.96 - Step 4: Simplify right side
815,422.14x = 573,771,358,420.50 - Step 5: Solve for x
x = 573,771,358,420.50/815,422.14 - Step 6: Final answer
x = 703,649.47
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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.