Finding the Fourth Proportional to 505,490,742.90, 758,236,114.35 and 423,861,405.30
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Solution
The fourth proportional to 505,490,742.90, 758,236,114.35 and 423,861,405.30 is: 635,792,107.95
Step by Step Solution
- Step 1: Write the proportion equation
505,490,742.90 : 758,236,114.35 = 423,861,405.30 : x - Step 2: Convert to fraction form
505,490,742.90/758,236,114.35 = 423,861,405.30/x - Step 3: Cross multiply
505,490,742.90x = 758,236,114.35 × 423,861,405.30 - Step 4: Simplify right side
505,490,742.90x = 321,387,024,977,602,496 - Step 5: Solve for x
x = 321,387,024,977,602,496/505,490,742.90 - Step 6: Final answer
x = 635,792,107.95
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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.