Finding the Fourth Proportional to 1,939,170,741.70, 2,909,165,130.15 and 628,971,039.94
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Solution
The fourth proportional to 1,939,170,741.70, 2,909,165,130.15 and 628,971,039.94 is: 943,589,224.98
Step by Step Solution
- Step 1: Write the proportion equation
1,939,170,741.70 : 2,909,165,130.15 = 628,971,039.94 : x - Step 2: Convert to fraction form
1,939,170,741.70/2,909,165,130.15 = 628,971,039.94/x - Step 3: Cross multiply
1,939,170,741.70x = 2,909,165,130.15 × 628,971,039.94 - Step 4: Simplify right side
1,939,170,741.70x = 1,829,780,617,267,631,104 - Step 5: Solve for x
x = 1,829,780,617,267,631,104/1,939,170,741.70 - Step 6: Final answer
x = 943,589,224.98
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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.