Finding the Fourth Proportional to 726,485.27, 1,002,534 and 420,574.59
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Solution
The fourth proportional to 726,485.27, 1,002,534 and 420,574.59 is: 580,383.87
Step by Step Solution
- Step 1: Write the proportion equation
726,485.27 : 1,002,534 = 420,574.59 : x - Step 2: Convert to fraction form
726,485.27/1,002,534 = 420,574.59/x - Step 3: Cross multiply
726,485.27x = 1,002,534 × 420,574.59 - Step 4: Simplify right side
726,485.27x = 421,640,326,011.06 - Step 5: Solve for x
x = 421,640,326,011.06/726,485.27 - Step 6: Final answer
x = 580,383.87
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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.