Finding the Fourth Proportional to 521,368,713, 782,153,777.34 and 198,227,459.88
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Solution
The fourth proportional to 521,368,713, 782,153,777.34 and 198,227,459.88 is: 297,379,479.53
Step by Step Solution
- Step 1: Write the proportion equation
521,368,713 : 782,153,777.34 = 198,227,459.88 : x - Step 2: Convert to fraction form
521,368,713/782,153,777.34 = 198,227,459.88/x - Step 3: Cross multiply
521,368,713x = 782,153,777.34 × 198,227,459.88 - Step 4: Simplify right side
521,368,713x = 155,044,356,517,655,296 - Step 5: Solve for x
x = 155,044,356,517,655,296/521,368,713 - Step 6: Final answer
x = 297,379,479.53
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.