Finding the Fourth Proportional to 777,784.68, 1,073,342.88 and 420,088.68
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Solution
The fourth proportional to 777,784.68, 1,073,342.88 and 420,088.68 is: 579,722.39
Step by Step Solution
- Step 1: Write the proportion equation
777,784.68 : 1,073,342.88 = 420,088.68 : x - Step 2: Convert to fraction form
777,784.68/1,073,342.88 = 420,088.68/x - Step 3: Cross multiply
777,784.68x = 1,073,342.88 × 420,088.68 - Step 4: Simplify right side
777,784.68x = 450,899,193,646.60 - Step 5: Solve for x
x = 450,899,193,646.60/777,784.68 - Step 6: Final answer
x = 579,722.39
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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.