Finding the Fourth Proportional to 1,555,875,427.36, 2,147,082,857.04 and 851,021,242.96
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Solution
The fourth proportional to 1,555,875,427.36, 2,147,082,857.04 and 851,021,242.96 is: 1,174,395,513.68
Step by Step Solution
- Step 1: Write the proportion equation
1,555,875,427.36 : 2,147,082,857.04 = 851,021,242.96 : x - Step 2: Convert to fraction form
1,555,875,427.36/2,147,082,857.04 = 851,021,242.96/x - Step 3: Cross multiply
1,555,875,427.36x = 2,147,082,857.04 × 851,021,242.96 - Step 4: Simplify right side
1,555,875,427.36x = 1,827,213,121,736,288,768 - Step 5: Solve for x
x = 1,827,213,121,736,288,768/1,555,875,427.36 - Step 6: Final answer
x = 1,174,395,513.68
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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.