Finding the Fourth Proportional to 512,908, 707,800 and 286,555.20
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Solution
The fourth proportional to 512,908, 707,800 and 286,555.20 is: 395,438.89
Step by Step Solution
- Step 1: Write the proportion equation
512,908 : 707,800 = 286,555.20 : x - Step 2: Convert to fraction form
512,908/707,800 = 286,555.20/x - Step 3: Cross multiply
512,908x = 707,800 × 286,555.20 - Step 4: Simplify right side
512,908x = 202,823,770,560 - Step 5: Solve for x
x = 202,823,770,560/512,908 - Step 6: Final answer
x = 395,438.89
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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.