Finding the Fourth Proportional to 716,512.21, 988,409.98 and 425,917.08
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Solution
The fourth proportional to 716,512.21, 988,409.98 and 425,917.08 is: 587,541.54
Step by Step Solution
- Step 1: Write the proportion equation
716,512.21 : 988,409.98 = 425,917.08 : x - Step 2: Convert to fraction form
716,512.21/988,409.98 = 425,917.08/x - Step 3: Cross multiply
716,512.21x = 988,409.98 × 425,917.08 - Step 4: Simplify right side
716,512.21x = 420,980,691,474.84 - Step 5: Solve for x
x = 420,980,691,474.84/716,512.21 - Step 6: Final answer
x = 587,541.54
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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.