Finding the Fourth Proportional to 428,823.75, 643,235.63 and 293,754.63
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Solution
The fourth proportional to 428,823.75, 643,235.63 and 293,754.63 is: 440,631.95
Step by Step Solution
- Step 1: Write the proportion equation
428,823.75 : 643,235.63 = 293,754.63 : x - Step 2: Convert to fraction form
428,823.75/643,235.63 = 293,754.63/x - Step 3: Cross multiply
428,823.75x = 643,235.63 × 293,754.63 - Step 4: Simplify right side
428,823.75x = 188,953,443,024.69 - Step 5: Solve for x
x = 188,953,443,024.69/428,823.75 - Step 6: Final answer
x = 440,631.95
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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.