Finding the Fourth Proportional to 777,925.12, 1,073,535.06 and 420,229.12
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Solution
The fourth proportional to 777,925.12, 1,073,535.06 and 420,229.12 is: 579,915.32
Step by Step Solution
- Step 1: Write the proportion equation
777,925.12 : 1,073,535.06 = 420,229.12 : x - Step 2: Convert to fraction form
777,925.12/1,073,535.06 = 420,229.12/x - Step 3: Cross multiply
777,925.12x = 1,073,535.06 × 420,229.12 - Step 4: Simplify right side
777,925.12x = 451,130,693,552.95 - Step 5: Solve for x
x = 451,130,693,552.95/777,925.12 - Step 6: Final answer
x = 579,915.32
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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.