Finding the Fourth Proportional to 1,621,047,263.38, 2,237,047,136.08 and 878,491,326.13
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Solution
The fourth proportional to 1,621,047,263.38, 2,237,047,136.08 and 878,491,326.13 is: 1,212,319,066.56
Step by Step Solution
- Step 1: Write the proportion equation
1,621,047,263.38 : 2,237,047,136.08 = 878,491,326.13 : x - Step 2: Convert to fraction form
1,621,047,263.38/2,237,047,136.08 = 878,491,326.13/x - Step 3: Cross multiply
1,621,047,263.38x = 2,237,047,136.08 × 878,491,326.13 - Step 4: Simplify right side
1,621,047,263.38x = 1,965,226,505,182,448,896 - Step 5: Solve for x
x = 1,965,226,505,182,448,896/1,621,047,263.38 - Step 6: Final answer
x = 1,212,319,066.56
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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.