Finding the Fourth Proportional to 528,620.95, 729,478.39 and 286,898.68
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Solution
The fourth proportional to 528,620.95, 729,478.39 and 286,898.68 is: 395,910.12
Step by Step Solution
- Step 1: Write the proportion equation
528,620.95 : 729,478.39 = 286,898.68 : x - Step 2: Convert to fraction form
528,620.95/729,478.39 = 286,898.68/x - Step 3: Cross multiply
528,620.95x = 729,478.39 × 286,898.68 - Step 4: Simplify right side
528,620.95x = 209,286,383,808.75 - Step 5: Solve for x
x = 209,286,383,808.75/528,620.95 - Step 6: Final answer
x = 395,910.12
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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.