Finding the Fourth Proportional to 645,107.88, 890,279.26 and 358,632.75
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Solution
The fourth proportional to 645,107.88, 890,279.26 and 358,632.75 is: 494,930.09
Step by Step Solution
- Step 1: Write the proportion equation
645,107.88 : 890,279.26 = 358,632.75 : x - Step 2: Convert to fraction form
645,107.88/890,279.26 = 358,632.75/x - Step 3: Cross multiply
645,107.88x = 890,279.26 × 358,632.75 - Step 4: Simplify right side
645,107.88x = 319,283,298,385.18 - Step 5: Solve for x
x = 319,283,298,385.18/645,107.88 - Step 6: Final answer
x = 494,930.09
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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.