Finding the Fourth Proportional to 728,276.79, 1,005,081.80 and 401,653.68
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Solution
The fourth proportional to 728,276.79, 1,005,081.80 and 401,653.68 is: 554,315.08
Step by Step Solution
- Step 1: Write the proportion equation
728,276.79 : 1,005,081.80 = 401,653.68 : x - Step 2: Convert to fraction form
728,276.79/1,005,081.80 = 401,653.68/x - Step 3: Cross multiply
728,276.79x = 1,005,081.80 × 401,653.68 - Step 4: Simplify right side
728,276.79x = 403,694,803,671.02 - Step 5: Solve for x
x = 403,694,803,671.02/728,276.79 - Step 6: Final answer
x = 554,315.08
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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.