Finding the Fourth Proportional to 4,990,023,256.57, 6,886,286,513.64 and 2,762,392,645.69
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Solution
The fourth proportional to 4,990,023,256.57, 6,886,286,513.64 and 2,762,392,645.69 is: 3,812,131,976.81
Step by Step Solution
- Step 1: Write the proportion equation
4,990,023,256.57 : 6,886,286,513.64 = 2,762,392,645.69 : x - Step 2: Convert to fraction form
4,990,023,256.57/6,886,286,513.64 = 2,762,392,645.69/x - Step 3: Cross multiply
4,990,023,256.57x = 6,886,286,513.64 × 2,762,392,645.69 - Step 4: Simplify right side
4,990,023,256.57x = 19,022,627,221,393,367,040 - Step 5: Solve for x
x = 19,022,627,221,393,367,040/4,990,023,256.57 - Step 6: Final answer
x = 3,812,131,976.81
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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.