Finding the Fourth Proportional to 445,991,773.38, 615,486,132.99 and 305,158,387.02
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Solution
The fourth proportional to 445,991,773.38, 615,486,132.99 and 305,158,387.02 is: 421,130,538.25
Step by Step Solution
- Step 1: Write the proportion equation
445,991,773.38 : 615,486,132.99 = 305,158,387.02 : x - Step 2: Convert to fraction form
445,991,773.38/615,486,132.99 = 305,158,387.02/x - Step 3: Cross multiply
445,991,773.38x = 615,486,132.99 × 305,158,387.02 - Step 4: Simplify right side
445,991,773.38x = 187,820,755,576,405,600 - Step 5: Solve for x
x = 187,820,755,576,405,600/445,991,773.38 - Step 6: Final answer
x = 421,130,538.25
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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.