Finding the Fourth Proportional to 1,179,936,701.80, 1,769,905,052.70 and 812,604,682.60
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Solution
The fourth proportional to 1,179,936,701.80, 1,769,905,052.70 and 812,604,682.60 is: 1,218,907,023.90
Step by Step Solution
- Step 1: Write the proportion equation
1,179,936,701.80 : 1,769,905,052.70 = 812,604,682.60 : x - Step 2: Convert to fraction form
1,179,936,701.80/1,769,905,052.70 = 812,604,682.60/x - Step 3: Cross multiply
1,179,936,701.80x = 1,769,905,052.70 × 812,604,682.60 - Step 4: Simplify right side
1,179,936,701.80x = 1,438,233,133,581,419,776 - Step 5: Solve for x
x = 1,438,233,133,581,419,776/1,179,936,701.80 - Step 6: Final answer
x = 1,218,907,023.90
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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.