Finding the Fourth Proportional to 812,727.30, 1,121,551.32 and 445,201.49
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Solution
The fourth proportional to 812,727.30, 1,121,551.32 and 445,201.49 is: 614,371.29
Step by Step Solution
- Step 1: Write the proportion equation
812,727.30 : 1,121,551.32 = 445,201.49 : x - Step 2: Convert to fraction form
812,727.30/1,121,551.32 = 445,201.49/x - Step 3: Cross multiply
812,727.30x = 1,121,551.32 × 445,201.49 - Step 4: Simplify right side
812,727.30x = 499,316,318,775.47 - Step 5: Solve for x
x = 499,316,318,775.47/812,727.30 - Step 6: Final answer
x = 614,371.29
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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.