Finding the Fourth Proportional to 1,279,043,997.60, 1,918,565,996.40 and 1,201,559,899.80
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Solution
The fourth proportional to 1,279,043,997.60, 1,918,565,996.40 and 1,201,559,899.80 is: 1,802,339,849.70
Step by Step Solution
- Step 1: Write the proportion equation
1,279,043,997.60 : 1,918,565,996.40 = 1,201,559,899.80 : x - Step 2: Convert to fraction form
1,279,043,997.60/1,918,565,996.40 = 1,201,559,899.80/x - Step 3: Cross multiply
1,279,043,997.60x = 1,918,565,996.40 × 1,201,559,899.80 - Step 4: Simplify right side
1,279,043,997.60x = 2,305,271,966,394,071,296 - Step 5: Solve for x
x = 2,305,271,966,394,071,296/1,279,043,997.60 - Step 6: Final answer
x = 1,802,339,849.70
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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.