Finding the Fourth Proportional to 640,766.99, 884,190.79 and 354,240.83
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Solution
The fourth proportional to 640,766.99, 884,190.79 and 354,240.83 is: 488,814.94
Step by Step Solution
- Step 1: Write the proportion equation
640,766.99 : 884,190.79 = 354,240.83 : x - Step 2: Convert to fraction form
640,766.99/884,190.79 = 354,240.83/x - Step 3: Cross multiply
640,766.99x = 884,190.79 × 354,240.83 - Step 4: Simplify right side
640,766.99x = 313,216,479,327.96 - Step 5: Solve for x
x = 313,216,479,327.96/640,766.99 - Step 6: Final answer
x = 488,814.94
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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.