Finding the Fourth Proportional to 745,414.70, 1,028,409.99 and 487,442.66
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Solution
The fourth proportional to 745,414.70, 1,028,409.99 and 487,442.66 is: 672,499.35
Step by Step Solution
- Step 1: Write the proportion equation
745,414.70 : 1,028,409.99 = 487,442.66 : x - Step 2: Convert to fraction form
745,414.70/1,028,409.99 = 487,442.66/x - Step 3: Cross multiply
745,414.70x = 1,028,409.99 × 487,442.66 - Step 4: Simplify right side
745,414.70x = 501,290,901,096.17 - Step 5: Solve for x
x = 501,290,901,096.17/745,414.70 - Step 6: Final answer
x = 672,499.35
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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.