Finding the Fourth Proportional to 493,871.12, 681,528.21 and 289,918.79
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Solution
The fourth proportional to 493,871.12, 681,528.21 and 289,918.79 is: 400,079.75
Step by Step Solution
- Step 1: Write the proportion equation
493,871.12 : 681,528.21 = 289,918.79 : x - Step 2: Convert to fraction form
493,871.12/681,528.21 = 289,918.79/x - Step 3: Cross multiply
493,871.12x = 681,528.21 × 289,918.79 - Step 4: Simplify right side
493,871.12x = 197,587,837,519.35 - Step 5: Solve for x
x = 197,587,837,519.35/493,871.12 - Step 6: Final answer
x = 400,079.75
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.