Finding the Fourth Proportional to 491,631,885.99, 678,443,976.77 and 268,608,768.03
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Solution
The fourth proportional to 491,631,885.99, 678,443,976.77 and 268,608,768.03 is: 370,675,714.84
Step by Step Solution
- Step 1: Write the proportion equation
491,631,885.99 : 678,443,976.77 = 268,608,768.03 : x - Step 2: Convert to fraction form
491,631,885.99/678,443,976.77 = 268,608,768.03/x - Step 3: Cross multiply
491,631,885.99x = 678,443,976.77 × 268,608,768.03 - Step 4: Simplify right side
491,631,885.99x = 182,236,000,776,220,576 - Step 5: Solve for x
x = 182,236,000,776,220,576/491,631,885.99 - Step 6: Final answer
x = 370,675,714.84
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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.