Finding the Fourth Proportional to 742,833.36, 1,025,134.56 and 420,536.88
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Solution
The fourth proportional to 742,833.36, 1,025,134.56 and 420,536.88 is: 580,354.78
Step by Step Solution
- Step 1: Write the proportion equation
742,833.36 : 1,025,134.56 = 420,536.88 : x - Step 2: Convert to fraction form
742,833.36/1,025,134.56 = 420,536.88/x - Step 3: Cross multiply
742,833.36x = 1,025,134.56 × 420,536.88 - Step 4: Simplify right side
742,833.36x = 431,106,889,442.57 - Step 5: Solve for x
x = 431,106,889,442.57/742,833.36 - Step 6: Final answer
x = 580,354.78
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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.