Finding the Fourth Proportional to 642,424.14, 886,508.28 and 355,927.14
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Solution
The fourth proportional to 642,424.14, 886,508.28 and 355,927.14 is: 491,158.94
Step by Step Solution
- Step 1: Write the proportion equation
642,424.14 : 886,508.28 = 355,927.14 : x - Step 2: Convert to fraction form
642,424.14/886,508.28 = 355,927.14/x - Step 3: Cross multiply
642,424.14x = 886,508.28 × 355,927.14 - Step 4: Simplify right side
642,424.14x = 315,532,356,686.72 - Step 5: Solve for x
x = 315,532,356,686.72/642,424.14 - Step 6: Final answer
x = 491,158.94
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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.