Finding the Fourth Proportional to 728,975.97, 1,005,972.75 and 402,319.71
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Solution
The fourth proportional to 728,975.97, 1,005,972.75 and 402,319.71 is: 555,193.42
Step by Step Solution
- Step 1: Write the proportion equation
728,975.97 : 1,005,972.75 = 402,319.71 : x - Step 2: Convert to fraction form
728,975.97/1,005,972.75 = 402,319.71/x - Step 3: Cross multiply
728,975.97x = 1,005,972.75 × 402,319.71 - Step 4: Simplify right side
728,975.97x = 404,722,665,047.90 - Step 5: Solve for x
x = 404,722,665,047.90/728,975.97 - Step 6: Final answer
x = 555,193.42
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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.