Finding the Fourth Proportional to 685,310.99, 1,026,842.91 and 485,272.28
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Solution
The fourth proportional to 685,310.99, 1,026,842.91 and 485,272.28 is: 727,112.81
Step by Step Solution
- Step 1: Write the proportion equation
685,310.99 : 1,026,842.91 = 485,272.28 : x - Step 2: Convert to fraction form
685,310.99/1,026,842.91 = 485,272.28/x - Step 3: Cross multiply
685,310.99x = 1,026,842.91 × 485,272.28 - Step 4: Simplify right side
685,310.99x = 498,298,400,137.54 - Step 5: Solve for x
x = 498,298,400,137.54/685,310.99 - Step 6: Final answer
x = 727,112.81
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.