Finding the Fourth Proportional to 1,259,717,559.20, 1,889,576,338.80 and 871,432,330.40
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Solution
The fourth proportional to 1,259,717,559.20, 1,889,576,338.80 and 871,432,330.40 is: 1,307,148,495.60
Step by Step Solution
- Step 1: Write the proportion equation
1,259,717,559.20 : 1,889,576,338.80 = 871,432,330.40 : x - Step 2: Convert to fraction form
1,259,717,559.20/1,889,576,338.80 = 871,432,330.40/x - Step 3: Cross multiply
1,259,717,559.20x = 1,889,576,338.80 × 871,432,330.40 - Step 4: Simplify right side
1,259,717,559.20x = 1,646,637,912,389,183,744 - Step 5: Solve for x
x = 1,646,637,912,389,183,744/1,259,717,559.20 - Step 6: Final answer
x = 1,307,148,495.60
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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.