Finding the Fourth Proportional to 1,133,887,998.80, 1,700,831,998.20 and 272,244,990.80
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Solution
The fourth proportional to 1,133,887,998.80, 1,700,831,998.20 and 272,244,990.80 is: 408,367,486.20
Step by Step Solution
- Step 1: Write the proportion equation
1,133,887,998.80 : 1,700,831,998.20 = 272,244,990.80 : x - Step 2: Convert to fraction form
1,133,887,998.80/1,700,831,998.20 = 272,244,990.80/x - Step 3: Cross multiply
1,133,887,998.80x = 1,700,831,998.20 × 272,244,990.80 - Step 4: Simplify right side
1,133,887,998.80x = 463,042,991,702,304,640 - Step 5: Solve for x
x = 463,042,991,702,304,640/1,133,887,998.80 - Step 6: Final answer
x = 408,367,486.20
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Double scale
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Similar ratio
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1.5x scale
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.