Finding the Fourth Proportional to 621,105.14, 857,155.50 and 349,258.62
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Solution
The fourth proportional to 621,105.14, 857,155.50 and 349,258.62 is: 481,993.99
Step by Step Solution
- Step 1: Write the proportion equation
621,105.14 : 857,155.50 = 349,258.62 : x - Step 2: Convert to fraction form
621,105.14/857,155.50 = 349,258.62/x - Step 3: Cross multiply
621,105.14x = 857,155.50 × 349,258.62 - Step 4: Simplify right side
621,105.14x = 299,368,947,055.41 - Step 5: Solve for x
x = 299,368,947,055.41/621,105.14 - Step 6: Final answer
x = 481,993.99
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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.