Finding the Fourth Proportional to 855,462.49, 1,180,801.05 and 493,128.56
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Solution
The fourth proportional to 855,462.49, 1,180,801.05 and 493,128.56 is: 680,668.91
Step by Step Solution
- Step 1: Write the proportion equation
855,462.49 : 1,180,801.05 = 493,128.56 : x - Step 2: Convert to fraction form
855,462.49/1,180,801.05 = 493,128.56/x - Step 3: Cross multiply
855,462.49x = 1,180,801.05 × 493,128.56 - Step 4: Simplify right side
855,462.49x = 582,286,721,432.99 - Step 5: Solve for x
x = 582,286,721,432.99/855,462.49 - Step 6: Final answer
x = 680,668.91
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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.