Finding the Fourth Proportional to 670,343.20, 1,005,514.80 and 621,135.70
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Solution
The fourth proportional to 670,343.20, 1,005,514.80 and 621,135.70 is: 931,703.55
Step by Step Solution
- Step 1: Write the proportion equation
670,343.20 : 1,005,514.80 = 621,135.70 : x - Step 2: Convert to fraction form
670,343.20/1,005,514.80 = 621,135.70/x - Step 3: Cross multiply
670,343.20x = 1,005,514.80 × 621,135.70 - Step 4: Simplify right side
670,343.20x = 624,561,139,158.36 - Step 5: Solve for x
x = 624,561,139,158.36/670,343.20 - Step 6: Final answer
x = 931,703.55
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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.