Finding the Fourth Proportional to 645,112.88, 890,286.17 and 358,637.75
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Solution
The fourth proportional to 645,112.88, 890,286.17 and 358,637.75 is: 494,936.99
Step by Step Solution
- Step 1: Write the proportion equation
645,112.88 : 890,286.17 = 358,637.75 : x - Step 2: Convert to fraction form
645,112.88/890,286.17 = 358,637.75/x - Step 3: Cross multiply
645,112.88x = 890,286.17 × 358,637.75 - Step 4: Simplify right side
645,112.88x = 319,290,227,071.73 - Step 5: Solve for x
x = 319,290,227,071.73/645,112.88 - Step 6: Final answer
x = 494,936.99
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1.5x scale
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.