Finding the Fourth Proportional to 831,815,785.20, 1,247,723,677.80 and 767,318,530.80
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Solution
The fourth proportional to 831,815,785.20, 1,247,723,677.80 and 767,318,530.80 is: 1,150,977,796.20
Step by Step Solution
- Step 1: Write the proportion equation
831,815,785.20 : 1,247,723,677.80 = 767,318,530.80 : x - Step 2: Convert to fraction form
831,815,785.20/1,247,723,677.80 = 767,318,530.80/x - Step 3: Cross multiply
831,815,785.20x = 1,247,723,677.80 × 767,318,530.80 - Step 4: Simplify right side
831,815,785.20x = 957,401,499,293,868,544 - Step 5: Solve for x
x = 957,401,499,293,868,544/831,815,785.20 - Step 6: Final answer
x = 1,150,977,796.20
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1.5x scale
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.