Finding the Fourth Proportional to 386,587,908.66, 533,491,401.09 and 212,747,652.66
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Solution
The fourth proportional to 386,587,908.66, 533,491,401.09 and 212,747,652.66 is: 293,591,808.63
Step by Step Solution
- Step 1: Write the proportion equation
386,587,908.66 : 533,491,401.09 = 212,747,652.66 : x - Step 2: Convert to fraction form
386,587,908.66/533,491,401.09 = 212,747,652.66/x - Step 3: Cross multiply
386,587,908.66x = 533,491,401.09 × 212,747,652.66 - Step 4: Simplify right side
386,587,908.66x = 113,499,043,296,192,064 - Step 5: Solve for x
x = 113,499,043,296,192,064/386,587,908.66 - Step 6: Final answer
x = 293,591,808.63
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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.