Finding the Fourth Proportional to 830,313.84, 1,145,845.80 and 490,813.68
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Solution
The fourth proportional to 830,313.84, 1,145,845.80 and 490,813.68 is: 677,330.39
Step by Step Solution
- Step 1: Write the proportion equation
830,313.84 : 1,145,845.80 = 490,813.68 : x - Step 2: Convert to fraction form
830,313.84/1,145,845.80 = 490,813.68/x - Step 3: Cross multiply
830,313.84x = 1,145,845.80 × 490,813.68 - Step 4: Simplify right side
830,313.84x = 562,396,793,810.54 - Step 5: Solve for x
x = 562,396,793,810.54/830,313.84 - Step 6: Final answer
x = 677,330.39
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.