Finding the Fourth Proportional to 1,348,651,687.20, 2,022,977,530.80 and 379,303,303.20
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Solution
The fourth proportional to 1,348,651,687.20, 2,022,977,530.80 and 379,303,303.20 is: 568,954,954.80
Step by Step Solution
- Step 1: Write the proportion equation
1,348,651,687.20 : 2,022,977,530.80 = 379,303,303.20 : x - Step 2: Convert to fraction form
1,348,651,687.20/2,022,977,530.80 = 379,303,303.20/x - Step 3: Cross multiply
1,348,651,687.20x = 2,022,977,530.80 × 379,303,303.20 - Step 4: Simplify right side
1,348,651,687.20x = 767,322,059,731,819,648 - Step 5: Solve for x
x = 767,322,059,731,819,648/1,348,651,687.20 - Step 6: Final answer
x = 568,954,954.80
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Double scale
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Similar ratio
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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.