Finding the Fourth Proportional to 5,427,430.73, 7,489,961.53 and 2,980,020.36
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Solution
The fourth proportional to 5,427,430.73, 7,489,961.53 and 2,980,020.36 is: 4,112,486.92
Step by Step Solution
- Step 1: Write the proportion equation
5,427,430.73 : 7,489,961.53 = 2,980,020.36 : x - Step 2: Convert to fraction form
5,427,430.73/7,489,961.53 = 2,980,020.36/x - Step 3: Cross multiply
5,427,430.73x = 7,489,961.53 × 2,980,020.36 - Step 4: Simplify right side
5,427,430.73x = 22,320,237,875,654.05 - Step 5: Solve for x
x = 22,320,237,875,654.05/5,427,430.73 - Step 6: Final answer
x = 4,112,486.92
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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.