Finding the Fourth Proportional to 640,850.70, 884,356.47 and 354,360.99
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Solution
The fourth proportional to 640,850.70, 884,356.47 and 354,360.99 is: 489,008.49
Step by Step Solution
- Step 1: Write the proportion equation
640,850.70 : 884,356.47 = 354,360.99 : x - Step 2: Convert to fraction form
640,850.70/884,356.47 = 354,360.99/x - Step 3: Cross multiply
640,850.70x = 884,356.47 × 354,360.99 - Step 4: Simplify right side
640,850.70x = 313,381,434,222.11 - Step 5: Solve for x
x = 313,381,434,222.11/640,850.70 - Step 6: Final answer
x = 489,008.49
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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.