Finding the Fourth Proportional to 1,911,921,331.42, 2,638,532,865.14 and 1,065,148,174.50
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Solution
The fourth proportional to 1,911,921,331.42, 2,638,532,865.14 and 1,065,148,174.50 is: 1,469,949,844.94
Step by Step Solution
- Step 1: Write the proportion equation
1,911,921,331.42 : 2,638,532,865.14 = 1,065,148,174.50 : x - Step 2: Convert to fraction form
1,911,921,331.42/2,638,532,865.14 = 1,065,148,174.50/x - Step 3: Cross multiply
1,911,921,331.42x = 2,638,532,865.14 × 1,065,148,174.50 - Step 4: Simplify right side
1,911,921,331.42x = 2,810,428,464,662,125,568 - Step 5: Solve for x
x = 2,810,428,464,662,125,568/1,911,921,331.42 - Step 6: Final answer
x = 1,469,949,844.94
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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.