Finding the Fourth Proportional to 712,313,328.60, 982,992,486.68 and 394,794,074.15
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Solution
The fourth proportional to 712,313,328.60, 982,992,486.68 and 394,794,074.15 is: 544,815,873.99
Step by Step Solution
- Step 1: Write the proportion equation
712,313,328.60 : 982,992,486.68 = 394,794,074.15 : x - Step 2: Convert to fraction form
712,313,328.60/982,992,486.68 = 394,794,074.15/x - Step 3: Cross multiply
712,313,328.60x = 982,992,486.68 × 394,794,074.15 - Step 4: Simplify right side
712,313,328.60x = 388,079,608,672,779,264 - Step 5: Solve for x
x = 388,079,608,672,779,264/712,313,328.60 - Step 6: Final answer
x = 544,815,873.99
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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.