Finding the Fourth Proportional to 1,385,226,286.26, 1,911,643,204.95 and 790,498,930.02
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Solution
The fourth proportional to 1,385,226,286.26, 1,911,643,204.95 and 790,498,930.02 is: 1,090,906,174.02
Step by Step Solution
- Step 1: Write the proportion equation
1,385,226,286.26 : 1,911,643,204.95 = 790,498,930.02 : x - Step 2: Convert to fraction form
1,385,226,286.26/1,911,643,204.95 = 790,498,930.02/x - Step 3: Cross multiply
1,385,226,286.26x = 1,911,643,204.95 × 790,498,930.02 - Step 4: Simplify right side
1,385,226,286.26x = 1,511,151,908,092,978,688 - Step 5: Solve for x
x = 1,511,151,908,092,978,688/1,385,226,286.26 - Step 6: Final answer
x = 1,090,906,174.02
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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.