Finding the Fourth Proportional to 830,122.60, 1,246,350.30 and 515,194.60
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Solution
The fourth proportional to 830,122.60, 1,246,350.30 and 515,194.60 is: 773,515.80
Step by Step Solution
- Step 1: Write the proportion equation
830,122.60 : 1,246,350.30 = 515,194.60 : x - Step 2: Convert to fraction form
830,122.60/1,246,350.30 = 515,194.60/x - Step 3: Cross multiply
830,122.60x = 1,246,350.30 × 515,194.60 - Step 4: Simplify right side
830,122.60x = 642,112,944,268.38 - Step 5: Solve for x
x = 642,112,944,268.38/830,122.60 - Step 6: Final answer
x = 773,515.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.