Finding the Fourth Proportional to 685,813.80, 1,028,555.25 and 286,237.97
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Solution
The fourth proportional to 685,813.80, 1,028,555.25 and 286,237.97 is: 429,287.89
Step by Step Solution
- Step 1: Write the proportion equation
685,813.80 : 1,028,555.25 = 286,237.97 : x - Step 2: Convert to fraction form
685,813.80/1,028,555.25 = 286,237.97/x - Step 3: Cross multiply
685,813.80x = 1,028,555.25 × 286,237.97 - Step 4: Simplify right side
685,813.80x = 294,411,561,650.07 - Step 5: Solve for x
x = 294,411,561,650.07/685,813.80 - Step 6: Final answer
x = 429,287.89
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.