Finding the Fourth Proportional to 492,213,911.20, 738,264,879.60 and 128,745,008.80
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Solution
The fourth proportional to 492,213,911.20, 738,264,879.60 and 128,745,008.80 is: 193,102,869.01
Step by Step Solution
- Step 1: Write the proportion equation
492,213,911.20 : 738,264,879.60 = 128,745,008.80 : x - Step 2: Convert to fraction form
492,213,911.20/738,264,879.60 = 128,745,008.80/x - Step 3: Cross multiply
492,213,911.20x = 738,264,879.60 × 128,745,008.80 - Step 4: Simplify right side
492,213,911.20x = 95,047,918,420,832,944 - Step 5: Solve for x
x = 95,047,918,420,832,944/492,213,911.20 - Step 6: Final answer
x = 193,102,869.01
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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.