Finding the Fourth Proportional to 685,878.40, 1,028,979.68 and 286,297.12
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Solution
The fourth proportional to 685,878.40, 1,028,979.68 and 286,297.12 is: 429,513.33
Step by Step Solution
- Step 1: Write the proportion equation
685,878.40 : 1,028,979.68 = 286,297.12 : x - Step 2: Convert to fraction form
685,878.40/1,028,979.68 = 286,297.12/x - Step 3: Cross multiply
685,878.40x = 1,028,979.68 × 286,297.12 - Step 4: Simplify right side
685,878.40x = 294,593,918,922.52 - Step 5: Solve for x
x = 294,593,918,922.52/685,878.40 - Step 6: Final answer
x = 429,513.33
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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.