Finding the Fourth Proportional to 818,119.74, 1,227,263.57 and 313,105.53
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Solution
The fourth proportional to 818,119.74, 1,227,263.57 and 313,105.53 is: 469,690.43
Step by Step Solution
- Step 1: Write the proportion equation
818,119.74 : 1,227,263.57 = 313,105.53 : x - Step 2: Convert to fraction form
818,119.74/1,227,263.57 = 313,105.53/x - Step 3: Cross multiply
818,119.74x = 1,227,263.57 × 313,105.53 - Step 4: Simplify right side
818,119.74x = 384,263,010,534.54 - Step 5: Solve for x
x = 384,263,010,534.54/818,119.74 - Step 6: Final answer
x = 469,690.43
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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.