Finding the Fourth Proportional to 830,138.99, 1,145,845.85 and 486,055.58
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Solution
The fourth proportional to 830,138.99, 1,145,845.85 and 486,055.58 is: 670,905.44
Step by Step Solution
- Step 1: Write the proportion equation
830,138.99 : 1,145,845.85 = 486,055.58 : x - Step 2: Convert to fraction form
830,138.99/1,145,845.85 = 486,055.58/x - Step 3: Cross multiply
830,138.99x = 1,145,845.85 × 486,055.58 - Step 4: Simplify right side
830,138.99x = 556,944,761,052.84 - Step 5: Solve for x
x = 556,944,761,052.84/830,138.99 - Step 6: Final answer
x = 670,905.44
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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.