Finding the Fourth Proportional to 521,368,711, 782,153,774.34 and 198,227,457.88
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Solution
The fourth proportional to 521,368,711, 782,153,774.34 and 198,227,457.88 is: 297,379,476.53
Step by Step Solution
- Step 1: Write the proportion equation
521,368,711 : 782,153,774.34 = 198,227,457.88 : x - Step 2: Convert to fraction form
521,368,711/782,153,774.34 = 198,227,457.88/x - Step 3: Cross multiply
521,368,711x = 782,153,774.34 × 198,227,457.88 - Step 4: Simplify right side
521,368,711x = 155,044,354,358,665,376 - Step 5: Solve for x
x = 155,044,354,358,665,376/521,368,711 - Step 6: Final answer
x = 297,379,476.53
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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.