Finding the Fourth Proportional to 813,236.81, 1,122,216.05 and 450,639.50
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Solution
The fourth proportional to 813,236.81, 1,122,216.05 and 450,639.50 is: 621,854.38
Step by Step Solution
- Step 1: Write the proportion equation
813,236.81 : 1,122,216.05 = 450,639.50 : x - Step 2: Convert to fraction form
813,236.81/1,122,216.05 = 450,639.50/x - Step 3: Cross multiply
813,236.81x = 1,122,216.05 × 450,639.50 - Step 4: Simplify right side
813,236.81x = 505,714,871,799.70 - Step 5: Solve for x
x = 505,714,871,799.70/813,236.81 - Step 6: Final answer
x = 621,854.38
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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.