Finding the Fourth Proportional to 612,989.07, 845,911.67 and 354,876.95
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Solution
The fourth proportional to 612,989.07, 845,911.67 and 354,876.95 is: 489,722.52
Step by Step Solution
- Step 1: Write the proportion equation
612,989.07 : 845,911.67 = 354,876.95 : x - Step 2: Convert to fraction form
612,989.07/845,911.67 = 354,876.95/x - Step 3: Cross multiply
612,989.07x = 845,911.67 × 354,876.95 - Step 4: Simplify right side
612,989.07x = 300,194,550,997.33 - Step 5: Solve for x
x = 300,194,550,997.33/612,989.07 - Step 6: Final answer
x = 489,722.52
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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.