Finding the Fourth Proportional to 3,889,303,251.88, 5,367,238,749.94 and 2,129,170,659.88
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Solution
The fourth proportional to 3,889,303,251.88, 5,367,238,749.94 and 2,129,170,659.88 is: 2,938,255,654.25
Step by Step Solution
- Step 1: Write the proportion equation
3,889,303,251.88 : 5,367,238,749.94 = 2,129,170,659.88 : x - Step 2: Convert to fraction form
3,889,303,251.88/5,367,238,749.94 = 2,129,170,659.88/x - Step 3: Cross multiply
3,889,303,251.88x = 5,367,238,749.94 × 2,129,170,659.88 - Step 4: Simplify right side
3,889,303,251.88x = 11,427,767,270,924,515,328 - Step 5: Solve for x
x = 11,427,767,270,924,515,328/3,889,303,251.88 - Step 6: Final answer
x = 2,938,255,654.25
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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.