Finding the Fourth Proportional to 1,687,036,781.55, 2,530,722,272.63 and 623,738,422.96
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Solution
The fourth proportional to 1,687,036,781.55, 2,530,722,272.63 and 623,738,422.96 is: 935,669,415.47
Step by Step Solution
- Step 1: Write the proportion equation
1,687,036,781.55 : 2,530,722,272.63 = 623,738,422.96 : x - Step 2: Convert to fraction form
1,687,036,781.55/2,530,722,272.63 = 623,738,422.96/x - Step 3: Cross multiply
1,687,036,781.55x = 2,530,722,272.63 × 623,738,422.96 - Step 4: Simplify right side
1,687,036,781.55x = 1,578,508,719,275,215,872 - Step 5: Solve for x
x = 1,578,508,719,275,215,872/1,687,036,781.55 - Step 6: Final answer
x = 935,669,415.47
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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.