Finding the Fourth Proportional to 877,721.49, 1,211,246.18 and 485,252.78
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Solution
The fourth proportional to 877,721.49, 1,211,246.18 and 485,252.78 is: 669,643.59
Step by Step Solution
- Step 1: Write the proportion equation
877,721.49 : 1,211,246.18 = 485,252.78 : x - Step 2: Convert to fraction form
877,721.49/1,211,246.18 = 485,252.78/x - Step 3: Cross multiply
877,721.49x = 1,211,246.18 × 485,252.78 - Step 4: Simplify right side
877,721.49x = 587,760,567,626.89 - Step 5: Solve for x
x = 587,760,567,626.89/877,721.49 - Step 6: Final answer
x = 669,643.59
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.