Finding the Fourth Proportional to 1,122,022,138.70, 1,683,033,208.05 and 304,134,439.70
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Solution
The fourth proportional to 1,122,022,138.70, 1,683,033,208.05 and 304,134,439.70 is: 456,201,659.55
Step by Step Solution
- Step 1: Write the proportion equation
1,122,022,138.70 : 1,683,033,208.05 = 304,134,439.70 : x - Step 2: Convert to fraction form
1,122,022,138.70/1,683,033,208.05 = 304,134,439.70/x - Step 3: Cross multiply
1,122,022,138.70x = 1,683,033,208.05 × 304,134,439.70 - Step 4: Simplify right side
1,122,022,138.70x = 511,868,361,726,780,224 - Step 5: Solve for x
x = 511,868,361,726,780,224/1,122,022,138.70 - Step 6: Final answer
x = 456,201,659.55
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Double scale
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Similar ratio
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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.