Finding the Fourth Proportional to 985,536.80, 1,478,305.20 and 670,608.80
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Solution
The fourth proportional to 985,536.80, 1,478,305.20 and 670,608.80 is: 1,005,913.20
Step by Step Solution
- Step 1: Write the proportion equation
985,536.80 : 1,478,305.20 = 670,608.80 : x - Step 2: Convert to fraction form
985,536.80/1,478,305.20 = 670,608.80/x - Step 3: Cross multiply
985,536.80x = 1,478,305.20 × 670,608.80 - Step 4: Simplify right side
985,536.80x = 991,364,476,205.76 - Step 5: Solve for x
x = 991,364,476,205.76/985,536.80 - Step 6: Final answer
x = 1,005,913.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.