Finding the Fourth Proportional to 1,455,362,408.10, 2,183,043,612.15 and 420,257,057.70
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Solution
The fourth proportional to 1,455,362,408.10, 2,183,043,612.15 and 420,257,057.70 is: 630,385,586.55
Step by Step Solution
- Step 1: Write the proportion equation
1,455,362,408.10 : 2,183,043,612.15 = 420,257,057.70 : x - Step 2: Convert to fraction form
1,455,362,408.10/2,183,043,612.15 = 420,257,057.70/x - Step 3: Cross multiply
1,455,362,408.10x = 2,183,043,612.15 × 420,257,057.70 - Step 4: Simplify right side
1,455,362,408.10x = 917,439,485,272,939,008 - Step 5: Solve for x
x = 917,439,485,272,939,008/1,455,362,408.10 - Step 6: Final answer
x = 630,385,586.55
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Similar ratio
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1.5x scale
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.