Finding the Fourth Proportional to 1,330,686,312.80, 1,996,029,469.20 and 986,312,544.80
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Solution
The fourth proportional to 1,330,686,312.80, 1,996,029,469.20 and 986,312,544.80 is: 1,479,468,817.20
Step by Step Solution
- Step 1: Write the proportion equation
1,330,686,312.80 : 1,996,029,469.20 = 986,312,544.80 : x - Step 2: Convert to fraction form
1,330,686,312.80/1,996,029,469.20 = 986,312,544.80/x - Step 3: Cross multiply
1,330,686,312.80x = 1,996,029,469.20 × 986,312,544.80 - Step 4: Simplify right side
1,330,686,312.80x = 1,968,708,905,262,445,056 - Step 5: Solve for x
x = 1,968,708,905,262,445,056/1,330,686,312.80 - Step 6: Final answer
x = 1,479,468,817.20
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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.