Finding the Fourth Proportional to 513,644.74, 708,791.25 and 287,246.50
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Solution
The fourth proportional to 513,644.74, 708,791.25 and 287,246.50 is: 396,378.64
Step by Step Solution
- Step 1: Write the proportion equation
513,644.74 : 708,791.25 = 287,246.50 : x - Step 2: Convert to fraction form
513,644.74/708,791.25 = 287,246.50/x - Step 3: Cross multiply
513,644.74x = 708,791.25 × 287,246.50 - Step 4: Simplify right side
513,644.74x = 203,597,805,793.13 - Step 5: Solve for x
x = 203,597,805,793.13/513,644.74 - Step 6: Final answer
x = 396,378.64
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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.