Finding the Fourth Proportional to 528,043.40, 790,898.70 and 278,433.80
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Solution
The fourth proportional to 528,043.40, 790,898.70 and 278,433.80 is: 417,035.66
Step by Step Solution
- Step 1: Write the proportion equation
528,043.40 : 790,898.70 = 278,433.80 : x - Step 2: Convert to fraction form
528,043.40/790,898.70 = 278,433.80/x - Step 3: Cross multiply
528,043.40x = 790,898.70 × 278,433.80 - Step 4: Simplify right side
528,043.40x = 220,212,930,456.06 - Step 5: Solve for x
x = 220,212,930,456.06/528,043.40 - Step 6: Final answer
x = 417,035.66
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.