Finding the Fourth Proportional to 986,012.21, 1,479,210.02 and 378,756.12
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Solution
The fourth proportional to 986,012.21, 1,479,210.02 and 378,756.12 is: 568,207.82
Step by Step Solution
- Step 1: Write the proportion equation
986,012.21 : 1,479,210.02 = 378,756.12 : x - Step 2: Convert to fraction form
986,012.21/1,479,210.02 = 378,756.12/x - Step 3: Cross multiply
986,012.21x = 1,479,210.02 × 378,756.12 - Step 4: Simplify right side
986,012.21x = 560,259,845,946.54 - Step 5: Solve for x
x = 560,259,845,946.54/986,012.21 - Step 6: Final answer
x = 568,207.82
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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.