Finding the Fourth Proportional to 397,707,759.77, 548,853,719.00 and 221,495,726.87
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Solution
The fourth proportional to 397,707,759.77, 548,853,719.00 and 221,495,726.87 is: 305,673,576.76
Step by Step Solution
- Step 1: Write the proportion equation
397,707,759.77 : 548,853,719.00 = 221,495,726.87 : x - Step 2: Convert to fraction form
397,707,759.77/548,853,719.00 = 221,495,726.87/x - Step 3: Cross multiply
397,707,759.77x = 548,853,719.00 × 221,495,726.87 - Step 4: Simplify right side
397,707,759.77x = 121,568,753,431,355,984 - Step 5: Solve for x
x = 121,568,753,431,355,984/397,707,759.77 - Step 6: Final answer
x = 305,673,576.76
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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.