Finding the Fourth Proportional to 685,717.24, 1,028,740.09 and 286,135.74
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Solution
The fourth proportional to 685,717.24, 1,028,740.09 and 286,135.74 is: 429,272.14
Step by Step Solution
- Step 1: Write the proportion equation
685,717.24 : 1,028,740.09 = 286,135.74 : x - Step 2: Convert to fraction form
685,717.24/1,028,740.09 = 286,135.74/x - Step 3: Cross multiply
685,717.24x = 1,028,740.09 × 286,135.74 - Step 4: Simplify right side
685,717.24x = 294,359,306,919.82 - Step 5: Solve for x
x = 294,359,306,919.82/685,717.24 - Step 6: Final answer
x = 429,272.14
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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.