Finding the Fourth Proportional to 2,018,648,109.90, 2,785,618,165.19 and 1,126,504,817.18
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Solution
The fourth proportional to 2,018,648,109.90, 2,785,618,165.19 and 1,126,504,817.18 is: 1,554,511,787.62
Step by Step Solution
- Step 1: Write the proportion equation
2,018,648,109.90 : 2,785,618,165.19 = 1,126,504,817.18 : x - Step 2: Convert to fraction form
2,018,648,109.90/2,785,618,165.19 = 1,126,504,817.18/x - Step 3: Cross multiply
2,018,648,109.90x = 2,785,618,165.19 × 1,126,504,817.18 - Step 4: Simplify right side
2,018,648,109.90x = 3,138,012,281,901,393,920 - Step 5: Solve for x
x = 3,138,012,281,901,393,920/2,018,648,109.90 - Step 6: Final answer
x = 1,554,511,787.62
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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.