Finding the Fourth Proportional to 1,618,975,711.46, 2,234,193,611.99 and 876,419,774.21
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Solution
The fourth proportional to 1,618,975,711.46, 2,234,193,611.99 and 876,419,774.21 is: 1,209,463,148.27
Step by Step Solution
- Step 1: Write the proportion equation
1,618,975,711.46 : 2,234,193,611.99 = 876,419,774.21 : x - Step 2: Convert to fraction form
1,618,975,711.46/2,234,193,611.99 = 876,419,774.21/x - Step 3: Cross multiply
1,618,975,711.46x = 2,234,193,611.99 × 876,419,774.21 - Step 4: Simplify right side
1,618,975,711.46x = 1,958,091,460,963,037,952 - Step 5: Solve for x
x = 1,958,091,460,963,037,952/1,618,975,711.46 - Step 6: Final answer
x = 1,209,463,148.27
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.