Finding the Fourth Proportional to 910,673,838.82, 1,256,733,908.29 and 492,986,124.12
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Solution
The fourth proportional to 910,673,838.82, 1,256,733,908.29 and 492,986,124.12 is: 680,323,022.46
Step by Step Solution
- Step 1: Write the proportion equation
910,673,838.82 : 1,256,733,908.29 = 492,986,124.12 : x - Step 2: Convert to fraction form
910,673,838.82/1,256,733,908.29 = 492,986,124.12/x - Step 3: Cross multiply
910,673,838.82x = 1,256,733,908.29 × 492,986,124.12 - Step 4: Simplify right side
910,673,838.82x = 619,552,378,503,370,880 - Step 5: Solve for x
x = 619,552,378,503,370,880/910,673,838.82 - Step 6: Final answer
x = 680,323,022.46
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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.