Finding the Fourth Proportional to 725,998.87, 1,001,902.74 and 399,325.70
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Solution
The fourth proportional to 725,998.87, 1,001,902.74 and 399,325.70 is: 551,082.83
Step by Step Solution
- Step 1: Write the proportion equation
725,998.87 : 1,001,902.74 = 399,325.70 : x - Step 2: Convert to fraction form
725,998.87/1,001,902.74 = 399,325.70/x - Step 3: Cross multiply
725,998.87x = 1,001,902.74 × 399,325.70 - Step 4: Simplify right side
725,998.87x = 400,085,511,723.31 - Step 5: Solve for x
x = 400,085,511,723.31/725,998.87 - Step 6: Final answer
x = 551,082.83
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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.