Finding the Fourth Proportional to 645,197.22, 890,370.09 and 358,717.23
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Solution
The fourth proportional to 645,197.22, 890,370.09 and 358,717.23 is: 495,028.62
Step by Step Solution
- Step 1: Write the proportion equation
645,197.22 : 890,370.09 = 358,717.23 : x - Step 2: Convert to fraction form
645,197.22/890,370.09 = 358,717.23/x - Step 3: Cross multiply
645,197.22x = 890,370.09 × 358,717.23 - Step 4: Simplify right side
645,197.22x = 319,391,092,359.65 - Step 5: Solve for x
x = 319,391,092,359.65/645,197.22 - Step 6: Final answer
x = 495,028.62
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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.