Finding the Fourth Proportional to 685,104,971.68, 945,336,868.71 and 399,043,577.12
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Solution
The fourth proportional to 685,104,971.68, 945,336,868.71 and 399,043,577.12 is: 550,617,235.70
Step by Step Solution
- Step 1: Write the proportion equation
685,104,971.68 : 945,336,868.71 = 399,043,577.12 : x - Step 2: Convert to fraction form
685,104,971.68/945,336,868.71 = 399,043,577.12/x - Step 3: Cross multiply
685,104,971.68x = 945,336,868.71 × 399,043,577.12 - Step 4: Simplify right side
685,104,971.68x = 377,230,605,673,458,240 - Step 5: Solve for x
x = 377,230,605,673,458,240/685,104,971.68 - Step 6: Final answer
x = 550,617,235.70
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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.