Finding the Fourth Proportional to 817,863.75, 1,129,596.84 and 545,458.19
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Solution
The fourth proportional to 817,863.75, 1,129,596.84 and 545,458.19 is: 753,362.45
Step by Step Solution
- Step 1: Write the proportion equation
817,863.75 : 1,129,596.84 = 545,458.19 : x - Step 2: Convert to fraction form
817,863.75/1,129,596.84 = 545,458.19/x - Step 3: Cross multiply
817,863.75x = 1,129,596.84 × 545,458.19 - Step 4: Simplify right side
817,863.75x = 616,147,842,128.14 - Step 5: Solve for x
x = 616,147,842,128.14/817,863.75 - Step 6: Final answer
x = 753,362.45
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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.