Finding the Fourth Proportional to 428,877.42, 642,504.08 and 286,292.72
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Solution
The fourth proportional to 428,877.42, 642,504.08 and 286,292.72 is: 428,896.99
Step by Step Solution
- Step 1: Write the proportion equation
428,877.42 : 642,504.08 = 286,292.72 : x - Step 2: Convert to fraction form
428,877.42/642,504.08 = 286,292.72/x - Step 3: Cross multiply
428,877.42x = 642,504.08 × 286,292.72 - Step 4: Simplify right side
428,877.42x = 183,944,236,030.31 - Step 5: Solve for x
x = 183,944,236,030.31/428,877.42 - Step 6: Final answer
x = 428,896.99
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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.