Finding the Fourth Proportional to 986,009.99, 1,479,236.51 and 312,131.70
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Solution
The fourth proportional to 986,009.99, 1,479,236.51 and 312,131.70 is: 468,267.68
Step by Step Solution
- Step 1: Write the proportion equation
986,009.99 : 1,479,236.51 = 312,131.70 : x - Step 2: Convert to fraction form
986,009.99/1,479,236.51 = 312,131.70/x - Step 3: Cross multiply
986,009.99x = 1,479,236.51 × 312,131.70 - Step 4: Simplify right side
986,009.99x = 461,716,607,348.70 - Step 5: Solve for x
x = 461,716,607,348.70/986,009.99 - Step 6: Final answer
x = 468,267.68
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1.5x scale
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.