Finding the Fourth Proportional to 640,190.18, 883,497.88 and 353,704.12
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Solution
The fourth proportional to 640,190.18, 883,497.88 and 353,704.12 is: 488,131.26
Step by Step Solution
- Step 1: Write the proportion equation
640,190.18 : 883,497.88 = 353,704.12 : x - Step 2: Convert to fraction form
640,190.18/883,497.88 = 353,704.12/x - Step 3: Cross multiply
640,190.18x = 883,497.88 × 353,704.12 - Step 4: Simplify right side
640,190.18x = 312,496,838,400.65 - Step 5: Solve for x
x = 312,496,838,400.65/640,190.18 - Step 6: Final answer
x = 488,131.26
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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.