Finding the Fourth Proportional to 1,129,456,412.53, 1,558,687,699.55 and 627,686,344.94
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Solution
The fourth proportional to 1,129,456,412.53, 1,558,687,699.55 and 627,686,344.94 is: 866,228,190.99
Step by Step Solution
- Step 1: Write the proportion equation
1,129,456,412.53 : 1,558,687,699.55 = 627,686,344.94 : x - Step 2: Convert to fraction form
1,129,456,412.53/1,558,687,699.55 = 627,686,344.94/x - Step 3: Cross multiply
1,129,456,412.53x = 1,558,687,699.55 × 627,686,344.94 - Step 4: Simplify right side
1,129,456,412.53x = 978,366,985,027,252,096 - Step 5: Solve for x
x = 978,366,985,027,252,096/1,129,456,412.53 - Step 6: Final answer
x = 866,228,190.99
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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.