Finding the Fourth Proportional to 428,642.14, 641,701.93 and 286,133.95
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Solution
The fourth proportional to 428,642.14, 641,701.93 and 286,133.95 is: 428,358.98
Step by Step Solution
- Step 1: Write the proportion equation
428,642.14 : 641,701.93 = 286,133.95 : x - Step 2: Convert to fraction form
428,642.14/641,701.93 = 286,133.95/x - Step 3: Cross multiply
428,642.14x = 641,701.93 × 286,133.95 - Step 4: Simplify right side
428,642.14x = 183,612,707,953.52 - Step 5: Solve for x
x = 183,612,707,953.52/428,642.14 - Step 6: Final answer
x = 428,358.98
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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.