Finding the Fourth Proportional to 1,936,871,990.70, 2,905,307,986.05 and 1,787,218,205.10
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Solution
The fourth proportional to 1,936,871,990.70, 2,905,307,986.05 and 1,787,218,205.10 is: 2,680,827,307.65
Step by Step Solution
- Step 1: Write the proportion equation
1,936,871,990.70 : 2,905,307,986.05 = 1,787,218,205.10 : x - Step 2: Convert to fraction form
1,936,871,990.70/2,905,307,986.05 = 1,787,218,205.10/x - Step 3: Cross multiply
1,936,871,990.70x = 2,905,307,986.05 × 1,787,218,205.10 - Step 4: Simplify right side
1,936,871,990.70x = 5,192,419,324,090,977,280 - Step 5: Solve for x
x = 5,192,419,324,090,977,280/1,936,871,990.70 - Step 6: Final answer
x = 2,680,827,307.65
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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.